OTANvsotroWhat's the difference?

Quick tell: OTAN is a name, otro is an adjective, so they fill different roles in a sentence.

Which to use

“OTAN” is a name and “otro” is an adjective - they look or sound alike but fill different roles in a sentence.

#9,167
“OTAN” frequency rank
#103
“otro” frequency rank
9270
confusion score

Side-by-Side Comparison

Feature OTAN otro
Definition Organización internacional política y militar creada como resultado de las negociaciones entre los signatarios del Tratado de Bruselas (Bélgica, Francia, Luxemburgo, Holanda y el Reino Unido), Estados Unidos y Canadá, así como otros cinco países de Europa Occidental invitados a participar (Dinamarca, Italia, Islandia, Noruega y Portugal), con el objetivo de organizar Europa ante la amenaza de la Unión Soviética después de la Segunda Guerra Mundial. Que no es el mismo que ya se había mencionado.

Where the eye mixes OTAN and otro

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

4 ch
OTAN
4 ch
otro

Look-alike desk: OTAN vs otro

These two trip readers on the page rather than in the ear: OTAN is [ˈot̪ãn] while otro is [ˈot̪ɾo]. 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 (name vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 9270, derived from the frequency rank of both members and their visual similarity.

OTAN is recorded at frequency rank #9,167, classified as aname, pronounced [ˈot̪ãn]. otro is at rank #103, tagged as anadj, pronounced [ˈot̪ɾo].

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 9270, this pair ranks #302,432 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of OTAN vs otro

Shared letters: ot. Private to "OTAN": an. Private to "otro": r.

"OTAN" · 4 letters · shape VCVC  ·  "otro" · 4 letters · shape VCCV

Known mistypes of this pair

  • OTANoatn · otann · otna · ottan · toan
  • otrootor · otrro · ottro

Frequently Asked Questions

Can "OTAN" and "otro" be used interchangeably?
No - they are not even the same part of speech. "OTAN" is a name and "otro" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "OTAN" or "otro" show up more?
"otro" is the more common of the two: it sits at frequency rank #103 in our Spanish list, against #9,167 for "OTAN". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "OTAN" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "otro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #302,432 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "OTAN" and "otro" also get mixed up with nearby pairs, the highest-scored neighbour is "oían vs OTAN". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #302,432 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