Which to use
“boa” is a noun and “but” is a preposition - they look or sound alike but fill different roles in a sentence.
- #22,904
- “boa” frequency rank
- #25
- “but” frequency rank
- 22929
- confusion score
Side-by-Side Comparison
| Feature | boa | but |
|---|---|---|
| Definition | Any of a group of large American snakes, of the genus Boa, subfamily Boinae, or family Boidae, including the boa constrictor and the emperor boa of Mexico. | Apart from, except (for), excluding. |
Where the spellings diverge
Shared letters are muted; the letters that actually set boa and but apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
boa and but form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They share most of their letters but differ in 2 positions - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 22929, derived from the frequency rank of both members and their visual similarity.
boa is recorded at frequency rank #22,904, classified as anoun, pronounced /ˈbəʊ.ə/. but is at rank #25, tagged as aprep, pronounced /ˈbʌt/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 22929, this pair ranks #413,003 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "boa" and "but" be used interchangeably?
Remembering boa vs but
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “boa”; for a preposition, it's “but”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “boa” entry
- Browse more pairs most likely to be confused. Most confusable