impvsionWhich spelling fits?

Which to use

“imp” and “ion” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#26,085
“imp” frequency rank
#22,745
“ion” frequency rank
48830
confusion score

Side-by-Side Comparison

Feature imp ion
Definition Granuja. Partícula cargada eléctricamente constituida por un átomo o molécula que no es eléctricamente neutro.

Where the eye mixes imp and ion

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
imp
3 ch
ion

Why the eye confuses imp with ion

A purely visual mix-up. imp (/ɪmp/) and ion ([ˈjõn]) 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 48830, derived from the frequency rank of both members and their visual similarity.

imp is recorded at frequency rank #26,085, classified as anoun, pronounced /ɪmp/. ion is at rank #22,745, tagged as anoun, pronounced [ˈjõn].

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 48830, this pair ranks #112,290 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of imp vs ion

Shared letters: i. Private to "imp": mp. Private to "ion": no.

"imp" · 3 letters · shape VCC  ·  "ion" · 3 letters · shape VVC

Frequently Asked Questions

Do "imp" and "ion" mean the same thing in a sentence?
No. They are said differently (/ɪmp/ versus [ˈjõn]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "imp" or "ion" show up more?
"ion" is the more common of the two: it sits at frequency rank #22,745 in our Spanish list, against #26,085 for "imp". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "imp" 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 #112,290 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "imp" and "ion" also get mixed up with nearby pairs, the highest-scored neighbour is "imp vs iza". Nearby pair

Confusion rank #112,290 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list