CaivsCloWhich spelling fits?

Quick tell: Cai is a name, Clo is a noun, so they fill different roles in a sentence.

Which to use

“Cai” is a name and “Clo” is a noun - they look or sound alike but fill different roles in a sentence.

#30,718
“Cai” frequency rank
#48,144
“Clo” frequency rank
78862
confusion score

Side-by-Side Comparison

Feature Cai Clo
Definition A surname from Chinese. Abbreviation of close (in street addresses).

Letter map: Cai vs Clo

Shared letters muted; letters that set Cai and Clo apart highlighted. Shared run: 1. Cai (CVV) and Clo (CCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
Cai
3 ch
Clo

Part-of-speech tell for Cai / Clo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Cai is aname and Cloanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 78862, derived from the frequency rank of both members and their visual similarity.

Cai is recorded at frequency rank #30,718, classified as aname. Clo is at rank #48,144, tagged as anoun.

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 78862, this pair ranks #23,588 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Cai vs Clo

Shared letters: c. Private to "Cai": ai. Private to "Clo": lo.

"Cai" · 3 letters · shape CVV  ·  "Clo" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "Cai" for "Clo" ever safe?
No - they are not even the same part of speech. "Cai" is a name and "Clo" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Cai" or "Clo"?
"Cai" is the more common of the two: it sits at frequency rank #30,718 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.

Useful next steps

Pair "Cai" vs "Clo" is on the table, pick a follow-up below.

  • Full dictionary entry for "Cai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Clo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #23,588 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Cai" and "Clo" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT vs Clo". Nearby pair

Confusion rank #23,588 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