ChasvschiWhich spelling fits?

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

Which to use

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

#28,867
“Chas” frequency rank
#7,660
“chi” frequency rank
36527
confusion score

Side-by-Side Comparison

Feature Chas chi
Definition A diminutive of the male given name Charles. The twenty-second letter of the Classical and Modern Greek alphabets.

Letter map: Chas vs chi

Shared letters muted; letters that set Chas and chi apart highlighted. Shared run: 2.

4 ch
Chas
3 ch
chi

Part-of-speech tell for Chas / chi

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Chas is aname and chianoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 36527, derived from the frequency rank of both members and their visual similarity.

Chas is recorded at frequency rank #28,867, classified as aname. chi is at rank #7,660, tagged as anoun, pronounced /kaɪ/.

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 36527, this pair ranks #302,435 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Chas vs chi

Shared letters: ch. Private to "Chas": as. Private to "chi": i.

"Chas" · 4 letters · shape CCVC  ·  "chi" · 3 letters · shape CCV

Known mistypes of this pair

  • Chascchas · chass · chhas · chsa · hcas

Frequently Asked Questions

Can "Chas" and "chi" be used interchangeably?
No - they are not even the same part of speech. "Chas" is a name and "chi" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Chas" vs "chi" - which ranks higher?
"chi" is the more common of the two: it sits at frequency rank #7,660 in our English list, against #28,867 for "Chas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "Chas" and "chi". Here's where to go from here.

  • Full dictionary entry for "Chas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "chi" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #302,435 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Chas" and "chi" also get mixed up with nearby pairs, the highest-scored neighbour is "Chas vs coms". 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 #302,435 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