# sec vs sein

> Spanish confusable word pair

## The two words

### sec
*adjective · IPA [sɛk] · frequency rank #17,813*
Seco

### sein
*verb · IPA [ˈzaɪ̯n] · frequency rank #45,601*
Ser, estar.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/es/vs/sec-vs-sein