# extension vs research

> German confusable word pair

## The two words

### extension
*noun · IPA […] · frequency rank #33,032*
Ausdehnung, Erweiterung, Umfang

### research
*noun · IPA […] · frequency rank #8,448*
Forschung, Untersuchung

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