# NAND vs NPD

> English confusable word pair

## The two words

### NAND
*noun · frequency rank #45,536*
A binary operator composite of NOT AND; negation of AND function.

### NPD
*noun · IPA /ɛn piː diː/ · frequency rank #42,299*
Initialism of narcissistic personality disorder.

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