oldvsOMSTell them apart

Quick tell: old is a adjective, OMS is a noun, so they fill different roles in a sentence.

Which to use

“old” is an adjective and “OMS” is a noun - they look or sound alike but fill different roles in a sentence.

#11,277
“old” frequency rank
#12,882
“OMS” frequency rank
24159
confusion score

Side-by-Side Comparison

Feature old OMS
Definition Viejo, anciano. 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 old and OMS

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

3 ch
old
3 ch
OMS

Visual trap between old and OMS

These two trip readers on the page rather than in the ear: old is /ˈəʊld/ while OMS is [ˈõms]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 24159, derived from the frequency rank of both members and their visual similarity.

old is recorded at frequency rank #11,277, classified as anadj, pronounced /ˈəʊld/. 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 24159, this pair ranks #242,443 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of old vs OMS

Shared letters: o. Private to "old": dl. Private to "OMS": ms.

"old" · 3 letters · shape VCC  ·  "OMS" · 3 letters · shape VCC

Frequently Asked Questions

Can "old" and "OMS" be used interchangeably?
No - they are not even the same part of speech. "old" is an adjective and "OMS" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "old" or "OMS" show up more?
"old" is the more common of the two: it sits at frequency rank #11,277 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.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "old" 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 #242,443 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "old" and "OMS" also get mixed up with nearby pairs, the highest-scored neighbour is "ome vs OMS". Nearby pair

Confusion rank #242,443 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