seca vs sei, What's the Difference?

Which to use

“seca” is a noun and “sei” is an intj - they look or sound alike but fill different roles in a sentence.

#2,805
“seca” frequency rank: #118
“sei” frequency rank: 2923
confusion score

Side-by-Side Comparison

Feature	seca	sei
Definition	período sem chuva	expressa que aquilo ouvido que foi dito ou afirmado por alguém não é tomado como sendo a verdade

Letter map: seca vs sei

Shared letters muted; letters that set seca and sei apart highlighted. Shared run: 2.

4 ch

seca

3 ch

sei

Role in the sentence - seca and sei

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: seca is anoun and seianintj. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 2923, derived from the frequency rank of both members and their visual similarity.

seca is recorded at frequency rank #2,805, classified as anoun, pronounced /ˈsɛ.kɐ/. sei is at rank #118, tagged as anintj.

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 2923, this pair ranks #72,302 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seca vs sei

Shared letters: es. Private to "seca": ac. Private to "sei": i.

"seca" · 4 letters · shape CVCV · "sei" · 3 letters · shape CVV

Known mistypes of this pair

seca ← esca · scea · seac · secca · sseca

Frequently Asked Questions

Can "seca" and "sei" be used interchangeably?

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

Which is more common, "seca" or "sei"?

"sei" is the more common of the two: it sits at frequency rank #118 in our Portuguese list, against #2,805 for "seca". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "seca" and "sei". Here's where to go from here.

Full dictionary entry for "seca" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sei" - compare definitions side by side with the headword page. Word entry
This pair ranks #72,302 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"seca" and "sei" also get mixed up with nearby pairs, the highest-scored neighbour is "seca vs senda". 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 #72,302 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.