Which to use
“IRM” is a noun and “iron” is an adjective - they look or sound alike but fill different roles in a sentence.
- #17,979
- “IRM” frequency rank
- #13,412
- “iron” frequency rank
- 31391
- confusion score
Side-by-Side Comparison
| Feature | IRM | iron |
|---|---|---|
| Definition | Technique d’imagerie médicale permettant l’analyse fine du corps humain par l’action d’un champ magnétique et d’ondes radio. | De fer, en fer. |
Where the eye mixes IRM and iron
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between IRM and iron
These two trip readers on the page rather than in the ear: IRM is \i.ɛ.ʁɛm\ while iron is \ˈaɪ.ɚn\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 31391, derived from the frequency rank of both members and their visual similarity.
IRM is recorded at frequency rank #17,979, classified as anoun, pronounced \i.ɛ.ʁɛm\. iron is at rank #13,412, tagged as anadj, pronounced \ˈaɪ.ɚn\.
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 31391, this pair ranks #304,084 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of IRM vs iron
Shared letters: ir. Private to "IRM": m. Private to "iron": no.
"IRM" · 3 letters · shape VCC · "iron" · 4 letters · shape VCVC
Known mistypes of this pair
- iron ← iorn · irno · ironn · irron · rion
Frequently Asked Questions
Do "IRM" and "iron" mean the same thing in a sentence?
Which is more common, "IRM" or "iron"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "IRM" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "iron" - compare definitions side by side with the headword page. Word entry
- This pair ranks #304,084 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "IRM" and "iron" also get mixed up with nearby pairs, the highest-scored neighbour is "IRM vs isi". 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 #304,084 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.