cielovscincoTell them apart

Quick tell: cielo is a noun, cinco is an adjective, so they fill different roles in a sentence.

Which to use

“cielo” is a noun and “cinco” is an adjective - they look or sound alike but fill different roles in a sentence.

#25,596
“cielo” frequency rank
#373
“cinco” frequency rank
25969
confusion score

Side-by-Side Comparison

Feature cielo cinco
Definition céu (abóbada celeste) número equivalente a quatro mais um; cardinalidade de um conjunto que contenha cinco elementos distintos; representado pelo símbolo 5 (algarismos arábicos) ou V (algarismos romanos)

Where the eye mixes cielo and cinco

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
cielo
5 ch
cinco

Look-alike desk: cielo vs cinco

These two trip readers on the page rather than in the ear: cielo is /ˈsje.lo/ while cinco is /ˈsĩ.ku/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 25969, derived from the frequency rank of both members and their visual similarity.

cielo is recorded at frequency rank #25,596, classified as anoun, pronounced /ˈsje.lo/. cinco is at rank #373, tagged as anadj, pronounced /ˈsĩ.ku/.

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 25969, this pair ranks #43,256 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cielo vs cinco

Shared letters: cio. Private to "cielo": el. Private to "cinco": n.

"cielo" · 5 letters · shape CVVCV  ·  "cinco" · 5 letters · shape CVCCV

Known mistypes of this pair

  • cieloccielo · ceilo · ciello · cieol · cileo · icelo
  • cincoccinco · cicno · cincco · cinnco · cinoc · cnico · icnco

Frequently Asked Questions

Can "cielo" and "cinco" be used interchangeably?
No - they are not even the same part of speech. "cielo" is a noun and "cinco" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "cielo" or "cinco" show up more?
"cinco" is the more common of the two: it sits at frequency rank #373 in our Portuguese list, against #25,596 for "cielo". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "cielo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cinco" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #43,256 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cielo" and "cinco" also get mixed up with nearby pairs, the highest-scored neighbour is "Cibele vs cielo". 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 #43,256 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list