birvsboyWhich spelling fits?

Quick tell: bir is a num, boy is a noun, so they fill different roles in a sentence.

Which to use

“bir” is a num and “boy” is a noun - they look or sound alike but fill different roles in a sentence.

#48,247
“bir” frequency rank
#5,179
“boy” frequency rank
53426
confusion score

Side-by-Side Comparison

Feature bir boy
Definition Uno, un. Chico del cuerpo de baile en las revistas y espectáculos musicales.

Where the eye mixes bir and boy

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

3 ch
bir
3 ch
boy

Why the eye confuses bir with boy

These two trip readers on the page rather than in the ear: bir is [bir] while boy is [ˈboj]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (num vs noun), which is usually the fastest check. Our composite confusion score for this pair is 53426, derived from the frequency rank of both members and their visual similarity.

bir is recorded at frequency rank #48,247, classified as anum, pronounced [bir]. boy is at rank #5,179, tagged as anoun, pronounced [ˈboj].

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 53426, this pair ranks #87,921 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of bir vs boy

Shared letters: b. Private to "bir": ir. Private to "boy": oy.

"bir" · 3 letters · shape CVC  ·  "boy" · 3 letters · shape CVV

Frequently Asked Questions

Do "bir" and "boy" mean the same thing in a sentence?
No - they are not even the same part of speech. "bir" is a num and "boy" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "bir" or "boy"?
"boy" is the more common of the two: it sits at frequency rank #5,179 in our Spanish list, against #48,247 for "bir". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "bir" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "boy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #87,921 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "bir" and "boy" also get mixed up with nearby pairs, the highest-scored neighbour is "bir vs brie". Nearby pair

Confusion rank #87,921 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