boy vs by, What's the Difference?

Which to use

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

#3,884
“boy” frequency rank: #1,598
“by” frequency rank: 5482
confusion score

Side-by-Side Comparison

Feature	boy	by
Definition	garoto, rapaz, jovem	por;

Letter map: boy vs by

Shared letters muted; letters that set boy and by apart highlighted. Shared run: 2.

3 ch

boy

2 ch

Part-of-speech tell for boy / by

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: boy is anoun and byapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 5482, derived from the frequency rank of both members and their visual similarity.

boy is recorded at frequency rank #3,884, classified as anoun, pronounced /bɔɪ/. by is at rank #1,598, tagged as aprep.

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 5482, this pair ranks #69,125 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of boy vs by

Shared letters: by. Private to "boy": o. Private to "by": -.

"boy" · 3 letters · shape CVV · "by" · 2 letters · shape CV

Frequently Asked Questions

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

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

Which is more common, "boy" or "by"?

"by" is the more common of the two: it sits at frequency rank #1,598 in our Portuguese list, against #3,884 for "boy". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "boy" and "by". Here's where to go from here.

Full dictionary entry for "boy" 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 #69,125 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"boy" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "boy vs bué". Nearby pair

Confusion rank #69,125 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.