C vs co, What's the Difference?

Which to use

“C” is a noun and “co” is a pronoun - they look or sound alike but fill different roles in a sentence.

#372
“C” frequency rank: #2,005
“co” frequency rank: 2377
confusion score

Side-by-Side Comparison

Feature	C	co
Definition	linguagem de programação de alto nível para computadores, voltada para o desenvolvimento de sistemas e aplicativos	que

Letter map: C vs co

Shared letters muted; letters that set C and co apart highlighted. Shared run: 1.

1 ch

2 ch

Role in the sentence - C and co

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: C is anoun and coapronoun. On the page they differ by 1 extra letter(s) - “C” sits inside “co”. Our composite confusion score for this pair is 2377, derived from the frequency rank of both members and their visual similarity.

C is recorded at frequency rank #372, classified as anoun. co is at rank #2,005, tagged as apron.

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 2377, this pair ranks #73,033 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of C vs co

Shared letters: c. Private to "C": -. Private to "co": o.

"C" · 1 letters · shape C · "co" · 2 letters · shape CV

Frequently Asked Questions

Can "C" and "co" be used interchangeably?

No - they are not even the same part of speech. "C" is a noun and "co" a pronoun, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "C" vs "co" - which ranks higher?

"C" is the more common of the two: it sits at frequency rank #372 in our Portuguese list, against #2,005 for "co". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "C" and "co". Here's where to go from here.

Full dictionary entry for "C" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "co" - compare definitions side by side with the headword page. Word entry
This pair ranks #73,033 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"C" and "co" also get mixed up with nearby pairs, the highest-scored neighbour is "ciao vs co". Nearby pair

Confusion rank #73,033 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.