# na vs NPL

> English confusable word pair

## The two words

### na
*adverb · IPA /nɑː/ · frequency rank #3,512*
Not.

### NPL
*name · frequency rank #49,528*
Initialism of National Physical Laboratory.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-02.
Canonical page: https://plainspell.com/en/vs/na-vs-npl