# ef vs em

> Spanish confusable word pair

## The two words

### ef
*noun · IPA [eɸ] · frequency rank #29,619*
Padre.

### em
*preposition · IPA [ĩ] · frequency rank #7,152*
En.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/es/vs/ef-vs-em