ClovsCPUWhich spelling fits?

Which to use

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

#48,144
“Clo” frequency rank
#10,835
“CPU” frequency rank
58979
confusion score

Side-by-Side Comparison

Feature Clo CPU
Definition Abbreviation of close (in street addresses). Initialism of central processing unit.

Letter map: Clo vs CPU

Shared letters muted; letters that set Clo and CPU apart highlighted. Shared run: 1.

3 ch
Clo
3 ch
CPU

Corpus notes: Clo and CPU

Clo and CPU 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 share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 58979, derived from the frequency rank of both members and their visual similarity.

Clo is recorded at frequency rank #48,144, classified as anoun. CPU is at rank #10,835, tagged as anoun, pronounced /(ˌ)siː(ˌ)piːˈjuː/.

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 58979, this pair ranks #109,046 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Clo vs CPU

Shared letters: c. Private to "Clo": lo. Private to "CPU": pu.

"Clo" · 3 letters · shape CCV  ·  "CPU" · 3 letters · shape CCV

Frequently Asked Questions

Can "Clo" and "CPU" be used interchangeably?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary English text, does "Clo" or "CPU" show up more?
"CPU" is the more common of the two: it sits at frequency rank #10,835 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.

What to do next

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

  • Full dictionary entry for "Clo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CPU" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #109,046 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Clo" and "CPU" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs Clo". Nearby pair

Confusion rank #109,046 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list