Which to use
“eco” is an intj and “ein” is an adverb - they look or sound alike but fill different roles in a sentence.
- #7,146
- “eco” frequency rank
- #15,098
- “ein” frequency rank
- 22244
- confusion score
Side-by-Side Comparison
| Feature | eco | ein |
|---|---|---|
| Definition | expressa nojo | (equipamento elétrico) ligado |
Where the eye mixes eco and ein
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: eco vs ein
These two trip readers on the page rather than in the ear: eco is /ˈɛ.ku/ while ein is /aɪ̯n/ ouvir^(fonte ?). 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 (intj vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 22244, derived from the frequency rank of both members and their visual similarity.
eco is recorded at frequency rank #7,146, classified as anintj, pronounced /ˈɛ.ku/. ein is at rank #15,098, tagged as anadv, pronounced /aɪ̯n/ ouvir^(fonte ?).
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 22244, this pair ranks #47,858 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of eco vs ein
Shared letters: e. Private to "eco": co. Private to "ein": in.
"eco" · 3 letters · shape VCV · "ein" · 3 letters · shape VVC
Frequently Asked Questions
Can "eco" and "ein" be used interchangeably?
Frequency check: "eco" vs "ein" - which ranks higher?
Useful next steps
Eye-level mix-up between "eco" and "ein" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "eco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ein" - compare definitions side by side with the headword page. Word entry
- This pair ranks #47,858 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "eco" and "ein" also get mixed up with nearby pairs, the highest-scored neighbour is "ein vs elio". Nearby pair
Confusion rank #47,858 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.