# spiro vs spur

> English confusable word pair

## The two words

### spiro
*noun · IPA /ˈspɪɹəʊ/ · frequency rank #40,900*
A polycyclic compound or system that contains a single atom as the only common member of two rings.

### spur
*noun · IPA /spɜː/ · frequency rank #11,976*
A rigid implement, often roughly y-shaped, that is fixed to one's heel for the purpose of prodding a horse. Often worn by, and emblematic of, the cowboy or the knight.

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