# RFID vs rigid

> English confusable word pair

## The two words

### RFID
*noun · frequency rank #34,669*
Initialism of radio-frequency identification.

### rigid
*adjective · IPA /ˈɹɪd͡ʒ.ɪd/ · frequency rank #10,435*
Stiff, rather than flexible.

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