# Phosphor vs phosphorus

> English confusable word pair

## The two words

### Phosphor
*name · frequency rank #49,550*
Alternative spelling of Phosphorus (“the planet Venus, as the morning star”).

### phosphorus
*noun · IPA /ˈfɒs.fə.ɹəs/ · frequency rank #21,025*
A chemical element (symbol P) with an atomic number of 15, that exists in several allotropic forms.

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