# rein vs RKI

> German confusable word pair

## The two words

### rein
*adjective · IPA [ʁaɪ̯n] · frequency rank #605*
ganz unverschmutzt

### RKI
*abbrev · IPA [ɛʁkaːˈʔiː] · frequency rank #43,448*
Robert Koch-Institut

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