# STD vs Sul

> English confusable word pair

## The two words

### STD
*noun · frequency rank #16,797*
Initialism of sexually transmitted disease.

### Sul
*name · frequency rank #33,868*
Diminutive of Sully.

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