Which to use
“IMO” is a name and “ion” is a noun - they look or sound alike but fill different roles in a sentence.
- #11,045
- “IMO” frequency rank
- #5,604
- “ion” frequency rank
- 16649
- confusion score
Side-by-Side Comparison
| Feature | IMO | ion |
|---|---|---|
| Definition | Initialism of International Maritime Organization. | An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution. |
Letter map: IMO vs ion
Shared letters muted; letters that set IMO and ion apart highlighted. Shared run: 2.
Part-of-speech tell for IMO / ion
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: IMO is aname and ionanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16649, derived from the frequency rank of both members and their visual similarity.
IMO is recorded at frequency rank #11,045, classified as aname. ion is at rank #5,604, tagged as anoun, pronounced /ˈaɪən/.
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 16649, this pair ranks #456,436 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of IMO vs ion
Shared letters: io. Private to "IMO": m. Private to "ion": n.
"IMO" · 3 letters · shape VCV · "ion" · 3 letters · shape VVC
Frequently Asked Questions
Can "IMO" and "ion" be used interchangeably?
Frequency check: "IMO" vs "ion" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "IMO" and "ion".
- Full dictionary entry for "IMO" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ion" - compare definitions side by side with the headword page. Word entry
- This pair ranks #456,436 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "IMO" and "ion" also get mixed up with nearby pairs, the highest-scored neighbour is "IMO vs ith". Nearby pair
Confusion rank #456,436 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.