Coordinating & Correlative Conjunctions

Picture the start of a story you've written for homework.

The dragon woke up. He was hungry. He flew out of the cave. He wanted pizza.

Your ideas are fine — but read it back and it sounds a bit… clunky. Stop, start, stop again. Like a robot trying to tell a joke.

Now watch what happens with a few small words:

The dragon woke up and flew out of the cave, for he was hungry and wanted pizza.

Same ideas. But suddenly the sentence flows. The difference is nothing more than a handful of joining words — and, but, or and the tidy pairs like either…or.

Nobody's born knowing this. You pick these words up by talking and reading and texting, and you use them perfectly well by ear — right up until a teacher asks you to explain one, or writes "not parallel" in the margin, and the whole thing suddenly feels harder than it should.

The good news is that these words follow clear, friendly patterns. Once you can see the patterns, you'll stop guessing.

Before you read on, here's where we're heading. By the end of this article, you'll be able to: - Name the seven coordinating conjunctions (the FANBOYS) and say what job they do. - Join words, phrases and whole sentences — and know when you need a comma. - Use correlative pairs (either/or, neither/nor, both/and, not only…but also) with proper parallel structure. - Dodge the sneaky agreement traps — like "Either the teachers or the headmaster is…" — that catch nearly everyone.

Beginner (Foundation): Getting to Know And, But, Or and Friends

Let's start with the simplest idea. A conjunction is a joining word. It holds two pieces of language together so they make one clear thought instead of several stop-start ones.

The joiners you meet first are the coordinating conjunctions, and there's a classic memory trick for them: FANBOYS.

• For
• And
• Nor
• But
• Or
• Yet
• So

The word coordinating is a clue. These seven words join things that are equal — two things of the same rank, sitting side by side. Neither one is the boss of the other.

They can join two single words:

I packed a pen and a pencil. Do you want juice or water? It's small but heavy.

They can join two phrases (little groups of words that belong together):

We looked under the bed and behind the sofa. She's clever but often quite careless.

And — this is the powerful one — they can join two complete sentences into a single sentence. A complete sentence has someone doing something and could stand on its own: I finished my homework. That's complete. I went out to play. Also complete. Join them:

I finished my homework, and I went out to play.

Notice the comma before and there. When you join two complete sentences with a FANBOYS word, pop a comma in front of the conjunction. When you're only joining two words or short phrases (salt and pepper), you don't need one.

Two of the FANBOYS feel a little old-fashioned. For here means "because" (She smiled, for she had won), and nor is the "neither" version of or — we'll come back to nor later. Day to day, you'll lean on and, but, or, so and yet.

Common Mistake: "I revised for hours, I still failed the test." That comma isn't strong enough on its own to hold two complete sentences together. You need a joining word: "I revised for hours, but I still failed the test." (This mistake even has a name — a comma splice — which we'll cover fully in the future punctuation pillar.)

Before we go further, meet the other family: correlative conjunctions. These come in pairs and work as a team. One word introduces the first item, the other introduces the second:

You can either stay late or finish it tomorrow. Neither* Maya nor Leo brought a calculator. She is both kind and sharp. He not only scored the goal but also* set up the next one.

Notice the shape: whatever follows the first half should match whatever follows the second. That "matching" idea is called parallel structure, and it's the skill we'll build next.

Quick recap: - The seven coordinating conjunctions spell FANBOYS: for, and, nor, but, or, yet, so. - They join equal things: word + word, phrase + phrase, or sentence + sentence. - Use a comma before FANBOYS when joining two complete sentences — not for two single words. - Correlative conjunctions come in fixed pairs: either/or, neither/nor, both/and, not only…but also.

Intermediate (Development): Compound Subjects, Compound Predicates, and Parallel Pairs

Once you're happy spotting the joining words, it's time to use them on purpose — which means understanding the structures they build, and the small comma decisions that make your writing look tidy instead of careless.

Compound subjects and objects

When two things do the same job in a sentence, joined by and or or, you've built a compound — which just means "more than one part joined together."

A compound subject (two things doing the action):

Priya and Tom are on the bus. *Either Tom or Jack* will carry the bags.

A compound object (the action landing on two things):

Grandad made pancakes for me and my brother. We visited Paris, Rome and Berlin.

No comma is needed when you join just two items. Three or more, and you're into list territory, where commas reappear.

The comma trap: compound predicate vs. two sentences

Here's where people slip most often. A compound predicate means one subject doing two actions:

She opened her laptop and started typing.

That's one person (she) doing two things — so no comma before and. The second half, started typing, can't stand on its own as a sentence; there's no second she.

Compare that to two full sentences:

She opened her laptop, and she started typing.

Now the second she is there, both halves could stand alone, and the comma belongs.

The test is simple: if you can split the sentence into two sentences that each make sense on their own, use a comma. If the second part has no subject and can't stand alone, don't.

Common Mistake: Popping a comma before and just because and has appeared. "I went to the shop, and bought milk." That comma is wrong — bought milk has no subject, so it can't stand alone. Correct: "I went to the shop and bought milk."

Choosing the right coordinator

Each FANBOYS word carries a slightly different meaning, and picking the right one is part of writing well:

• and adds: I revised and slept.
• but contrasts: I revised but still felt nervous.
• or offers a choice: Do you want tea or juice?
• so shows a result: It was raining, so we stayed inside.
• yet is a thoughtful but: It was late, yet nobody wanted to leave.
• for means "because" (old-fashioned): She left early, for she felt unwell.
• nor continues a negative: He didn't laugh, nor did he smile. (Watch the flip: nor did he, not nor he did.)

Correlative pairs and parallel structure

Now back to those pairs — either/or, neither/nor, both/and, not only…but also. Their big rule: whatever type of word or phrase follows the first half, put the same type after the second half. Match verb with verb, noun with noun.

Watch it break, then fix it:

✘ We will either go to the park or at home. ✔ We will either go to the park or stay at home. (two verb phrases)

✘ She is both clever and works hard. ✔ She is both clever and hardworking. (two adjectives)

✘ He not only sings but also the guitar. ✔ He not only sings but also plays the guitar. (two verb phrases)

A quick trick: place the first word of the pair just before the part that differs. If the subject is shared, keep it outside the pair (She is both clever and kind). If the subjects differ, put them inside (Both Emily and Max are coming).

Pro-Tip: When you've written an either…or or not only…but also sentence, underline the bit after each half of the pair. If the two look like different "shapes" of language, rewrite until they match. Your ear will usually catch the wobble first — this just tells you where to look.

Quick recap: - Compound subjects/objects (two nouns doing one job) need no comma: Mia and Jake are coming. - Compound predicate (one subject, two verbs) needs no comma: She opened her laptop and started typing. - Two complete sentences joined by a coordinator do need a comma. - Correlative pairs demand parallel structure — same shape after each half.

Advanced (Mastery): Agreement Traps, Style, and Clever Choices

This is the bit that catches out even top-set students in exams — and it's about which verb to use (is or are, was or were) when the subject has two parts.

The agreement trap

When you join subjects with and, you almost always get a plural, because now there are genuinely two:

Milo and Zara are here.

But with or, either/or and neither/nor, something sneaky happens. The verb agrees with whichever subject is nearest to it — the one just before the verb. This is called the proximity rule ("proximity" means "nearness").

Neither the teachers nor the head is available. (Nearest = "the head," singular.) Neither the head nor the teachers are available. (Nearest = "the teachers," plural.)

Same idea — opposite verb — purely because of which subject you put last. Examiners love this.

It works with mixed pairs too:

Either my brother or my parents are picking me up. Either my parents or my brother is picking me up.

Because the strictly correct version can sound clunky, good writers often just reorder the subjects so the plural sits nearest the verb — it usually reads more smoothly. That's not cheating; it's craft. For the full story on agreement, see H2.6 and the Pillar 1 article on subject–verb agreement.

Common Mistake: Assuming neither/nor is always plural. "Neither the players nor the coach were happy" breaks the rule — "coach" is nearest and singular, so it should be was. Check the nearest subject, not the whole list.

Neither pairs with nor — and never doubles up

Neither goes with nor, never with or. And because neither…nor is already negative, don't add another "not":

✘ I don't have neither time nor money. ✔ I have neither time nor money.

Pro-Tip: Nor can appear on its own after a negative clause, and when it does, the helper verb flips forward like in a question: "I didn't call, nor did I text." Sounds formal, but it's correct — and it looks impressive in an essay when you use it on purpose.

Starting a sentence with And or But

You've probably been told never to do this. Here's the honest truth: it's a school rule, not a real rule of English. Brilliant writers open sentences with And or But all the time, for a pause or a sharp shift:

I knew I should apologise. But I couldn't find the words.

Just don't do it in every line, and in a formal exam essay, play it a bit safe — save the punchy sentence-starter for stories and writing where a touch of drama helps.

But vs. yet

Both signal contrast, but yet feels a little stronger — almost surprised: It's tiny, yet it's incredibly loud. Choosing between the FANBOYS isn't just about being correct; it's about the exact shade of meaning you want.

Quick recap: - Subjects joined by and take a plural verb. - With or / either…or / neither…nor, the verb matches the nearest subject. - Reorder so the plural sits nearest the verb if the sentence sounds awkward. - Neither pairs only with nor — and never double the negative. - Sentence-initial And/But is fine in stories, risky in formal essays.

UK vs US Usage

Good news — the way these conjunctions work is exactly the same on both sides of the Atlantic. FANBOYS, the correlative pairs, the parallel rule and the nearest-subject agreement rule are all taught identically in British and American schools.

The differences are small and mostly about commas and spelling.

The serial (Oxford) comma. In a list of three or more, UK writing often treats the final comma before and/or as optional: pens, pencils and rulers — though pens, pencils, and rulers is also fine. US school writing tends to expect that final comma more consistently. This is really a punctuation question, so we'll link you to the punctuation pillar for the details; it doesn't change how the conjunction itself works.

Spelling swaps. You'll spot differences like colour [US: color], organise [US: organize] and favourite [US: favorite] in examples — but the joining words themselves (and, but, or, either, neither) are spelt the same everywhere.

Sentence-initial But. Fully accepted in good modern writing on both sides, though a few traditional exam markers still frown if every sentence starts that way. Use judgement, not a ban.

Key Takeaways

• FANBOYS (for, and, nor, but, or, yet, so) are coordinating conjunctions that join equal words, phrases or complete sentences.
• Use a comma before FANBOYS when joining two complete sentences — not for a compound subject, object, or predicate.
• Correlative conjunctions work in pairs: either/or, neither/nor, both/and, not only…but also.
• Keep both halves of a correlative pair parallel — same shape on each side.
• With or / either…or / neither…nor, the verb agrees with the nearest subject.
• Neither pairs only with nor, and never doubles a negative.

Check Your Understanding

1. Which of these needs a comma before and? (a) I bought bread and milk. (b) I bought bread, and I forgot the milk.
2. Fix the parallel error: "He is not only funny but also he is kind."
3. Choose the right verb: "Neither the dogs nor the cat (is / are) allowed upstairs."
4. Which word wrongly pairs with neither — nor or or?
5. Rewrite so both halves match: "You can either take the bus or you could walk."

Related Articles

• H0 — What grammar really is (the big picture).
• H7.2 — Subordinating conjunctions (because, although, when) and complex sentences.
• H7.4 — Conjunctions vs relative pronouns (how and, but differ from who, which).
• H2.6 — Subject–verb agreement with correlatives (the deep dive).
• Pillar 1 — Subject–verb agreement basics, including compound subjects.
• Coming soon (Punctuation & Syntax pillar): comma splices, run-ons, and the serial comma.

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