Which to use
“ion” and “isi” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #22,745
- “ion” frequency rank
- #39,822
- “isi” frequency rank
- 62567
- confusion score
Side-by-Side Comparison
| Feature | ion | isi |
|---|---|---|
| Definition | Partícula cargada eléctricamente constituida por un átomo o molécula que no es eléctricamente neutro. | El extranjero, tierra o país de donde uno no es. |
Where the eye mixes ion and isi
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: ion vs isi
A purely visual mix-up. ion ([ˈjõn]) and isi (/ì.sí/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 62567, derived from the frequency rank of both members and their visual similarity.
ion is recorded at frequency rank #22,745, classified as anoun, pronounced [ˈjõn]. isi is at rank #39,822, tagged as anoun, pronounced /ì.sí/.
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 62567, this pair ranks #51,589 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of ion vs isi
Shared letters: i. Private to "ion": no. Private to "isi": s.
"ion" · 3 letters · shape VVC · "isi" · 3 letters · shape VCV
Frequently Asked Questions
Can "ion" and "isi" be used interchangeably?
Which is more common, "ion" or "isi"?
What to do next
Eye-level mix-up between "ion" and "isi" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ion" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "isi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #51,589 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "ion" and "isi" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs iza". Nearby pair
Confusion rank #51,589 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.