Clo vs CMOS, What's the Difference?

Which to use

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

#48,144
“Clo” frequency rank: #31,112
“CMOS” frequency rank: 79256
confusion score

Side-by-Side Comparison

Feature	Clo	CMOS
Definition	Abbreviation of close (in street addresses).	Initialism of complementary metal–oxide–semiconductor.

Letter map: Clo vs CMOS

Shared letters muted; letters that set Clo and CMOS apart highlighted. Shared run: 2. Clo runs 3 letters (CCV) against CMOS's 4 (CCVC) - the length gap alone is often enough to separate them once you know to check it.

3 ch

Clo

4 ch

CMOS

Pair insight - Clo / CMOS

Clo and CMOS 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 1 letter(s) in length. Our composite confusion score for this pair is 79256, derived from the frequency rank of both members and their visual similarity.

Clo is recorded at frequency rank #48,144, classified as anoun. CMOS is at rank #31,112, tagged as anoun, pronounced /ˈsiːmɒs/.

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 79256, this pair ranks #22,539 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Clo vs CMOS

Shared letters: co. Private to "Clo": l. Private to "CMOS": ms.

"Clo" · 3 letters · shape CCV · "CMOS" · 4 letters · shape CCVC

Known mistypes of this pair

CMOS ← ccmos · cmmos · cmoss · cmso · mcos

Frequently Asked Questions

Is swapping "Clo" for "CMOS" ever safe?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "Clo" vs "CMOS" - which ranks higher?

"CMOS" is the more common of the two: it sits at frequency rank #31,112 in our English list, against #48,144 for "Clo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "Clo" and "CMOS".

Full dictionary entry for "Clo" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "CMOS" - compare definitions side by side with the headword page. Word entry
This pair ranks #22,539 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"Clo" and "CMOS" 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 #22,539 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.