céu vs ci, What's the Difference?

Which to use

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

#1,163
“céu” frequency rank: #19,655
“ci” frequency rank: 20818
confusion score

Side-by-Side Comparison

Feature	céu	ci
Definition	parte do espaço que parece formar uma abóbada em cima de nossas cabeças; abóbada celeste	tu, pronome pessoal sujeito da segunda pessoa do singular:

Where the spellings diverge

Shared letters are muted; the letters that actually set céu and ci apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch

céu

2 ch

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: céu is /ˈsɛw/ while ci is /tsi/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 20818, derived from the frequency rank of both members and their visual similarity.

céu is recorded at frequency rank #1,163, classified as anoun, pronounced /ˈsɛw/. ci is at rank #19,655, tagged as apron, pronounced /tsi/.

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 20818, this pair ranks #49,601 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of céu vs ci

Shared letters: c. Private to "céu": ué. Private to "ci": i.

"céu" · 3 letters · shape CVV · "ci" · 2 letters · shape CV

Frequency comparison

céu#1,163

ci#19,655

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "céu" and "ci" be used interchangeably?

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

Which is more common, "céu" or "ci"?

"céu" is the more common of the two: it sits at frequency rank #1,163 in our Portuguese list, against #19,655 for "ci". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering céu vs ci

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “céu”; for a pronoun, it's “ci”.
See each word in full, definition, IPA, etymology and its other confusables. Full “céu” entry
Browse more pairs most likely to be confused. Most confusable