bun vs by, What's the Difference?

Which to use

“bun” is a noun and “by” is a preposition - they look or sound alike but fill different roles in a sentence.

#13,674
“bun” frequency rank: #24
“by” frequency rank: 13698
confusion score

Side-by-Side Comparison

Feature	bun	by
Definition	Senses referring to baked goods.	Near or next to.

Where the eye mixes bun and by

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

bun

2 ch

Visual trap between bun and by

These two trip readers on the page rather than in the ear: bun is /bʌn/ while by is /baɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 13698, derived from the frequency rank of both members and their visual similarity.

bun is recorded at frequency rank #13,674, classified as anoun, pronounced /bʌn/. by is at rank #24, tagged as aprep, pronounced /baɪ/.

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 13698, this pair ranks #474,314 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bun vs by

Shared letters: b. Private to "bun": nu. Private to "by": y.

"bun" · 3 letters · shape CVC · "by" · 2 letters · shape CV

Frequently Asked Questions

Can "bun" and "by" be used interchangeably?

No - they are not even the same part of speech. "bun" is a noun and "by" a preposition, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "bun" vs "by" - which ranks higher?

"by" is the more common of the two: it sits at frequency rank #24 in our English list, against #13,674 for "bun". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "bun" and "by" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "bun" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "by" - compare definitions side by side with the headword page. Word entry
This pair ranks #474,314 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"bun" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "BFS vs bun". Nearby pair

Confusion rank #474,314 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.