# sed vs su

> English confusable word pair

## The two words

### sed
*name · IPA /sɛd/ · frequency rank #31,340*
A noninteractive text editor (originally developed in Unix), intended for making systematic edits in an automatic or batch-oriented way.

### su
*noun · frequency rank #8,094*
Alternative form of xu (“former Vietnamese currency”).

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