One Word or Two

English is full of compound words or phrases that look and sound the same, but their meanings—and how they’re used—can change dramatically depending on use and context. Should it be “everyday” or “every day”? “Wake up” or “wake-up”?

Even seasoned writers get tripped up on these words. Let’s explore why these confusions occur and how to differentiate between such word pairs.

Why the Confusion?

English is constantly evolving. Over time, two words become one, vice versa, or end up hyphenated. Additionally, a lot of compound words sound the same as verb phrases, making it more difficult. 

Sometimes it doesn’t even matter. A lot of hyphenated compound words are simply because of styling. Different publications use different styles that have different guidelines on these kinds of issues.

There are no standard rules. However, a good rule of thumb is that compound nouns are closed (no spaces), while compound verbs are open (spaced).

Tips for Differentiating One Word vs. Two Words

When confused, remember these things:

  • Context matters. Many of these word pairs may be similar but have different uses and meanings. See if they make sense in your sentence.
  • Check a dictionary. Experts regularly update dictionaries to reflect current and correct usage. Always verify rather than guess.
  • Check your style guide. It might have rules and guidelines about hyphenating compound words and phrases.
  • Replace. If you’re unsure, try to use a synonym that makes sense. 

Commonly Confused Word Pairs

Check out this list of word pairs that frequently get confused, with a quick guide on when to use each:

1. Altogether/All together

Altogether (adjective)—entirely or completely

I am altogether happy with my exam results.

All together (phrase)—everyone or everything in the same place

We were all together when the power went out.

2. Everyday/ Every day

Everyday (adjective)—normal, mundane, common, the usual

His everyday routine includes a 20-minute nap in the afternoon.

Every day (adjective)—“each day”

I read books every day.

3. Everyone/ Every one

Everyone (pronoun)—all or everybody

This new rule is unfair for everybody.

Every one (phrase)—refers to each individual in a group

Every one of you has gone through training.

4. Already/ All ready

Already (adverb)—by this time or before the time in question

They should have arrived by this time.

All ready (phrase)—to be completely prepared.

They are all ready for the final match.

5. Anymore/ Any more

Anymore (adverb)—any longer, nowadays

They don’t make these kinds of machines anymore.

Any more (phrase)—an additional amount

Do you want any more pizza?

6. Backup/ Back up

Backup (adjective or noun)—a substitute or copy

They’re setting up a backup server for emergencies.

Back up (verb)—to make a copy of or to move back from your initial position

Everybody needs to back up from the edge of the track.

7. Pickup/ Pick up

Pickup (adjective or noun)—a type of truck, a casual encounter, or a sign of improvement

She and I agreed to replace our old car with a pickup truck.

Pick up (verb)—the act of collecting a thing or person

She likes to pick up litter while hiking the trail.

8. Awhile/ A while

Awhile (adverb)— for a length of time

Let’s rest awhile before continuing on

A while (phrase)—a period of time

The concert will take a while but it will be worth it.

9. Onetime/ One-time/ One time

Onetime, one-time (adjectives)—former or occurring only once

Skydiving is a one-time experience for me.

One time (phrase)—a specific occassion

One time, I saw a chair move by itself.

10. Anyone/ Any one

Anyone (pronoun)—refers to any person at all

Anyone would have panicked during an earthquake.

Any one (phrase)—refers to any single person within a group.

Any one of you would have done the same.

11. Wake up/ Wake-up

Wake up (verb)—to cease sleep; to become awake

She failed to wake up in time for the interview.

Wake-up (adjective or noun)—something that causes one to wake up

This surgery was her wake-up call to live healthier.

12. Setup/ Set up

Setup (adjective or noun)—the way something is organized, planned, or arranged.

The setup is going to take days for this kind of event.

Set up (verb)—to place in position, to establish

I need you guys to set up the chairs outside.

Language Evolution

The words above demonstrate how meaning and usage can change depending on whether they are written separately or as a single word. Some of these differences are slight, but knowing the correct one to use can be the difference to good writing.

Remember, meaning and usage also change depending on publications, location, and conventions. What is acceptable in one context could be frowned upon in another. When in doubt, always consult a dictionary or the style guide you’re currently following.

How do you differentiate between confusing words? Share them below!

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