ojovsOMSWhich spelling fits?

Which to use

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

#1,417
“ojo” frequency rank
#12,882
“OMS” frequency rank
14299
confusion score

Side-by-Side Comparison

Feature ojo OMS
Definition Órgano sensible a la luz que permite la visión en los seres vivos. Organismo de la organización de las Naciones Unidas (ONU) especializado en gestionar políticas de prevención, promoción e intervención en salud a nivel mundial.

Where the eye mixes ojo and OMS

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

3 ch
ojo
3 ch
OMS

Visual trap between ojo and OMS

A purely visual mix-up. ojo ([ˈoxo]) and OMS ([ˈõms]) 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 14299, derived from the frequency rank of both members and their visual similarity.

ojo is recorded at frequency rank #1,417, classified as anoun, pronounced [ˈoxo]. OMS is at rank #12,882, tagged as anoun, pronounced [ˈõms].

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 14299, this pair ranks #284,644 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ojo vs OMS

Shared letters: o. Private to "ojo": j. Private to "OMS": ms.

"ojo" · 3 letters · shape VCV  ·  "OMS" · 3 letters · shape VCC

Frequently Asked Questions

Can "ojo" and "OMS" be used interchangeably?
No. They are said differently ([ˈoxo] versus [ˈõms]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "ojo" or "OMS" show up more?
"ojo" is the more common of the two: it sits at frequency rank #1,417 in our Spanish list, against #12,882 for "OMS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "ojo" and "OMS" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "ojo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "OMS" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #284,644 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ojo" and "OMS" also get mixed up with nearby pairs, the highest-scored neighbour is "ome vs OMS". Nearby pair

Confusion rank #284,644 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