Which to use
“CEI” is an abbrev and “césio” is a noun - they look or sound alike but fill different roles in a sentence.
- #29,625
- “CEI” frequency rank
- #41,427
- “césio” frequency rank
- 71052
- confusion score
Side-by-Side Comparison
| Feature | CEI | césio |
|---|---|---|
| Definition | Communauté des États Indépendants (português: Comunidade dos Estados Independentes, CEI) | 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 CEI and césio
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. CEI runs 3 letters (CVV) against césio's 5 (CVCVV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between CEI and césio
These two trip readers on the page rather than in the ear: CEI is /se.ø.i/ while césio is /ˈsɛzju/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (abbrev vs noun), which is usually the fastest check. Our composite confusion score for this pair is 71052, derived from the frequency rank of both members and their visual similarity.
CEI is recorded at frequency rank #29,625, classified as anabbrev, pronounced /se.ø.i/. 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 71052, this pair ranks #3,464 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of CEI vs césio
Shared letters: ci. Private to "CEI": e. Private to "césio": osé.
"CEI" · 3 letters · shape CVV · "césio" · 5 letters · shape CVCVV
Frequently Asked Questions
Can "CEI" and "césio" be used interchangeably?
Frequency check: "CEI" vs "césio" - which ranks higher?
Useful next steps
Eye-level mix-up between "CEI" and "césio" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "CEI" 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 #3,464 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "CEI" and "césio" also get mixed up with nearby pairs, the highest-scored neighbour is "césio vs cisto". Nearby pair
Confusion rank #3,464 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.