# SLE vs SST

> English confusable word pair

## The two words

### SLE
*noun · frequency rank #48,486*
Initialism of systemic lupus erythematosus.

### SST
*noun · frequency rank #43,385*
Initialism of supersonic transport.

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