Clo vs clock, What's the Difference?

Which to use

“Clo” and “clock” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#48,144
“Clo” frequency rank: #3,414
“clock” frequency rank: 51558
confusion score

Side-by-Side Comparison

Feature	Clo	clock
Definition	Abbreviation of close (in street addresses).	A chronometer, an instrument that measures time, particularly the time of day.

Letter map: Clo vs clock

Shared letters muted; letters that set Clo and clock apart highlighted. Shared run: 3.

3 ch

Clo

5 ch

clock

Pair insight - Clo / clock

Clo and clock are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 2 extra letter(s) - “Clo” sits inside “clock”. Our composite confusion score for this pair is 51558, derived from the frequency rank of both members and their visual similarity.

Clo is recorded at frequency rank #48,144, classified as anoun. clock is at rank #3,414, tagged as anoun, pronounced /klɒk/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 51558, this pair ranks #164,471 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Clo vs clock

Shared letters: clo. Private to "Clo": -. Private to "clock": k.

"Clo" · 3 letters · shape CCV · "clock" · 5 letters · shape CCVCC

Known mistypes of this pair

clock ← cclock · clcok · cllock · clocck · clockk · clokc · colck · lcock

Frequently Asked Questions

Can "Clo" and "clock" be used interchangeably?

No. They differ by 2 extra letter(s) - “Clo” sits inside “clock”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Which is more common, "Clo" or "clock"?

"clock" is the more common of the two: it sits at frequency rank #3,414 in our English list, against #48,144 for "Clo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

You've compared "Clo" and "clock". Here's where to go from here.

Full dictionary entry for "Clo" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "clock" - compare definitions side by side with the headword page. Word entry
This pair ranks #164,471 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Clo" and "clock" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs Clo". Nearby pair
Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #164,471 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.