# spar vs spiro

> English confusable word pair

## The two words

### spar
*noun · IPA /spɑː/ · frequency rank #26,972*
A rafter of a roof.

### 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.

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