Which to use
“IB” and “io” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #16,046
- “IB” frequency rank
- #16,946
- “io” frequency rank
- 32992
- confusion score
Side-by-Side Comparison
| Feature | IB | io |
|---|---|---|
| Definition | An International Baccalaureate program | A type of moth, the io moth. |
Letter map: IB vs io
Shared letters muted; letters that set IB and io apart highlighted. Shared run: 1.
Spelling & dictionary notes on IB vs io
IB and io are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - b in “IB” becomes o in “io”. Our composite confusion score for this pair is 32992, derived from the frequency rank of both members and their visual similarity.
IB is recorded at frequency rank #16,046, classified as anoun. io is at rank #16,946, tagged as anoun, pronounced /ˈaɪəʊ/.
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 32992, this pair ranks #333,167 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of IB vs io
Shared letters: i. Private to "IB": b. Private to "io": o.
"IB" · 2 letters · shape VC · "io" · 2 letters · shape VV
Frequently Asked Questions
Is swapping "IB" for "io" ever safe?
Frequency check: "IB" vs "io" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "IB" and "io".
- Full dictionary entry for "IB" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "io" - compare definitions side by side with the headword page. Word entry
- This pair ranks #333,167 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "IB" and "io" also get mixed up with nearby pairs, the highest-scored neighbour is "io vs ith". Nearby pair
Confusion rank #333,167 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.