blyvsbuoyTell them apart

Which to use

“bly” and “buoy” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#46,343
“bly” frequency rank
#28,856
“buoy” frequency rank
75199
confusion score

Side-by-Side Comparison

Feature bly buoy
Definition Likeness; resemblance; look aspect; species; character. A float moored in water to mark a location, warn of danger, indicate a navigational channel or for other purposes

Where the eye mixes bly and buoy

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. bly runs 3 letters (CCV) against buoy's 4 (CVVV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
bly
4 ch
buoy

Visual trap between bly and buoy

A purely visual mix-up. bly (/blaɪ/) and buoy (/ˈbɔɪ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 75199, derived from the frequency rank of both members and their visual similarity.

bly is recorded at frequency rank #46,343, classified as anoun, pronounced /blaɪ/. buoy is at rank #28,856, tagged as anoun, pronounced /ˈbɔɪ/.

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 75199, this pair ranks #33,873 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of bly vs buoy

Shared letters: by. Private to "bly": l. Private to "buoy": ou.

"bly" · 3 letters · shape CCV  ·  "buoy" · 4 letters · shape CVVV

Known mistypes of this pair

  • buoy ← bbuoy · bouy · buoyy · buyo · uboy

Frequently Asked Questions

Is swapping "bly" for "buoy" ever safe?
No. They are said differently (/blaɪ/ versus /ˈbɔɪ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "bly" vs "buoy" - which ranks higher?
"buoy" is the more common of the two: it sits at frequency rank #28,856 in our English list, against #46,343 for "bly". 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 "bly" and "buoy" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "bly" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "buoy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #33,873 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "bly" and "buoy" also get mixed up with nearby pairs, the highest-scored neighbour is "BFS vs bly". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #33,873 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list