Which to use
“ien” is an article and “ion” is a noun - they look or sound alike but fill different roles in a sentence.
- #41,335
- “ien” frequency rank
- #14,064
- “ion” frequency rank
- 55399
- confusion score
Side-by-Side Comparison
| Feature | ien | ion |
|---|---|---|
| Definition | Un, une | Atome ou molécule ayant perdu ou gagné des électrons sur sa couche externe. |
Letter map: ien vs ion
Shared letters muted; letters that set ien and ion apart highlighted. Shared run: 2.
Grammar separator: ien vs ion
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ien is anarticle and ionanoun. On the page they differ by a single letter - e in “ien” becomes o in “ion”. Our composite confusion score for this pair is 55399, derived from the frequency rank of both members and their visual similarity.
ien is recorded at frequency rank #41,335, classified as anarticle. ion is at rank #14,064, tagged as anoun, pronounced \jɔ̃\.
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 55399, this pair ranks #127,704 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ien vs ion
Shared letters: in. Private to "ien": e. Private to "ion": o.
"ien" · 3 letters · shape VVC · "ion" · 3 letters · shape VVC
Frequently Asked Questions
Can "ien" and "ion" be used interchangeably?
Frequency check: "ien" vs "ion" - which ranks higher?
After this comparison
Pair "ien" vs "ion" is on the table, pick a follow-up below.
- Full dictionary entry for "ien" 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 #127,704 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ien" and "ion" also get mixed up with nearby pairs, the highest-scored neighbour is "ien vs isi". Nearby pair
Confusion rank #127,704 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.