# RFC vs rr

> Spanish confusable word pair

## The two words

### RFC
*abbrev · IPA [ˈɾfk] · frequency rank #37,838*
Registro Federal de Causantes.

### rr
*character · IPA /ˈre/ · frequency rank #20,813*
Vigésimo quinta letra del achegety o alfabeto guaraní.

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