# DFS vs duff

> English confusable word pair

## The two words

### DFS
*name · frequency rank #36,958*
Initialism of Discover Financial Services.

### duff
*noun · IPA /dʌf/ · frequency rank #18,063*
Dough.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/dfs-vs-duff