# extension vs extensive

> English confusable word pair

## The two words

### extension
*noun · IPA /ɪkˈstɛnʃən/ · frequency rank #3,231*
The act of extending; a stretching out; enlargement in length, breadth, or time; an increase.

### extensive
*adjective · IPA /ɪkˈstɛn.sɪv/ · frequency rank #3,056*
Having a great extent; covering a large area; vast.

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