# NSF vs NSFW

> English confusable word pair

## The two words

### NSF
*name · frequency rank #27,233*
Initialism of National Science Foundation.

### NSFW
*adjective · frequency rank #12,818*
Initialism of not safe for work; i.e., containing inappropriate or adult content (e.g. pornography or profanity) that may be unsuitable for public, formal or controlled environments, such as at work.

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