eca vs em, What's the Difference?

Which to use

“eca” is an intj and “em” is a preposition - they look or sound alike but fill different roles in a sentence.

#13,275
“eca” frequency rank: #7
“em” frequency rank: 13282
confusion score

Side-by-Side Comparison

Feature	eca	em
Definition	expressa nojo	exprime a ideia de:

Letter map: eca vs em

Shared letters muted; letters that set eca and em apart highlighted. Shared run: 1.

3 ch

eca

2 ch

Role in the sentence - eca and em

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: eca is anintj and emapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13282, derived from the frequency rank of both members and their visual similarity.

eca is recorded at frequency rank #13,275, classified as anintj. em is at rank #7, tagged as aprep, pronounced /ɐj̃/.

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 13282, this pair ranks #59,124 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of eca vs em

Shared letters: e. Private to "eca": ac. Private to "em": m.

"eca" · 3 letters · shape VCV · "em" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "eca" for "em" ever safe?

No - they are not even the same part of speech. "eca" is an intj and "em" a preposition, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "eca" or "em"?

"em" is the more common of the two: it sits at frequency rank #7 in our Portuguese list, against #13,275 for "eca". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "eca" and "em".

Full dictionary entry for "eca" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "em" - compare definitions side by side with the headword page. Word entry
This pair ranks #59,124 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"eca" and "em" also get mixed up with nearby pairs, the highest-scored neighbour is "ear vs eca". Nearby pair

Confusion rank #59,124 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.