cegovscésioTell them apart

Quick tell: cego is a adjective, césio is a noun, so they fill different roles in a sentence.

Which to use

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

#5,606
“cego” frequency rank
#41,427
“césio” frequency rank
47033
confusion score

Side-by-Side Comparison

Feature cego césio
Definition que não vê; desprovido de visão elemento químico de símbolo Cs, possui o número atômico 55 e massa atômica relativa 132,905 u; é um metal alcalino, de coloração ouro prateado; é encontrado em minerais de potássio, tais como micas, berílio, feldspatos e a polucita (alumínio-silicato de césio); o césio metálico é utilizado na fabricação de células fotoelétricas e detectores de infravermelho

Where the eye mixes cego and césio

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. cego runs 4 letters (CVCV) against césio's 5 (CVCVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
cego
5 ch
césio

Visual trap between cego and césio

These two trip readers on the page rather than in the ear: cego is /ˈsɛ.gu/ while césio is /ˈsɛzju/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 47033, derived from the frequency rank of both members and their visual similarity.

cego is recorded at frequency rank #5,606, classified as anadj, pronounced /ˈsɛ.gu/. césio is at rank #41,427, tagged as anoun, pronounced /ˈsɛzju/.

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 47033, this pair ranks #18,258 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of cego vs césio

Shared letters: co. Private to "cego": eg. Private to "césio": isé.

"cego" · 4 letters · shape CVCV  ·  "césio" · 5 letters · shape CVCVV

Known mistypes of this pair

  • cego ← ccego · ceggo · ceog · cgeo · ecgo

Frequently Asked Questions

Can "cego" and "césio" be used interchangeably?
No - they are not even the same part of speech. "cego" is an adjective and "césio" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "cego" or "césio" show up more?
"cego" is the more common of the two: it sits at frequency rank #5,606 in our Portuguese list, against #41,427 for "césio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "cego" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "césio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #18,258 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "cego" and "césio" also get mixed up with nearby pairs, the highest-scored neighbour is "césio vs cisto". 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 #18,258 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