# N1 vs Ng

> English confusable word pair

## The two words

### N1
*noun · frequency rank #30,893*
The rotational speed of the low-pressure spool of a multiple-spool gas turbine engine, expressed as a percentage of a certain reference rotational speed.

### Ng
*name · IPA /əŋ/ · frequency rank #8,322*
A surname from Chinese.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/n1-vs-ng