ilovsionTell them apart

Which to use

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

#43,641
“ilo” frequency rank
#22,745
“ion” frequency rank
66386
confusion score

Side-by-Side Comparison

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

Where the eye mixes ilo and ion

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
ilo
3 ch
ion

Visual trap between ilo and ion

A purely visual mix-up. ilo (/ˈilo/) 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 66386, derived from the frequency rank of both members and their visual similarity.

ilo is recorded at frequency rank #43,641, classified as anoun, pronounced /ˈilo/. 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 66386, this pair ranks #40,022 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of ilo vs ion

Shared letters: io. Private to "ilo": l. Private to "ion": n.

"ilo" · 3 letters · shape VCV  ·  "ion" · 3 letters · shape VVC

Frequently Asked Questions

Is swapping "ilo" for "ion" ever safe?
No. They are said differently (/ˈilo/ versus [ˈjõn]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "ilo" or "ion"?
"ion" is the more common of the two: it sits at frequency rank #22,745 in our Spanish list, against #43,641 for "ilo". 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 "ilo" 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 #40,022 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ilo" and "ion" also get mixed up with nearby pairs, the highest-scored neighbour is "ilo vs iza". Nearby pair

Confusion rank #40,022 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