bomvsbosTell them apart

Quick tell: bom is a adjective, bos is a noun, so they fill different roles in a sentence.

Which to use

“bom” is an adjective and “bos” is a noun - they look or sound alike but fill different roles in a sentence.

#27,500
“bom” frequency rank
#44,013
“bos” frequency rank
71513
confusion score

Side-by-Side Comparison

Feature bom bos
Definition Bueno. Animal bovino.

Where the eye mixes bom and bos

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
bom
3 ch
bos

Look-alike desk: bom vs bos

These two trip readers on the page rather than in the ear: bom is [ˈbõ] while bos is /ˈboːs/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - m in “bom” becomes s in “bos”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 71513, derived from the frequency rank of both members and their visual similarity.

bom is recorded at frequency rank #27,500, classified as anadj, pronounced [ˈbõ]. bos is at rank #44,013, tagged as anoun, pronounced /ˈboːs/.

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 71513, this pair ranks #27,329 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of bom vs bos

Shared letters: bo. Private to "bom": m. Private to "bos": s.

"bom" · 3 letters · shape CVC  ·  "bos" · 3 letters · shape CVC

Frequently Asked Questions

Is swapping "bom" for "bos" ever safe?
No - they are not even the same part of speech. "bom" is an adjective and "bos" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "bom" or "bos"?
"bom" is the more common of the two: it sits at frequency rank #27,500 in our Spanish list, against #44,013 for "bos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "bom" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #27,329 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "bom" and "bos" also get mixed up with nearby pairs, the highest-scored neighbour is "bos vs Bru". Nearby pair

Confusion rank #27,329 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list