OsmavsotraWhat's the difference?

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

Which to use

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

#42,600
“Osma” frequency rank
#106
“otra” frequency rank
42706
confusion score

Side-by-Side Comparison

Feature Osma otra
Definition Apellido. Forma del femenino de otro.

Where the eye mixes Osma and otra

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

4 ch
Osma
4 ch
otra

Visual trap between Osma and otra

These two trip readers on the page rather than in the ear: Osma is [ˈosma] while otra is [ˈot̪ɾa]. 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 42706, derived from the frequency rank of both members and their visual similarity.

Osma is recorded at frequency rank #42,600, classified as aname, pronounced [ˈosma]. otra is at rank #106, tagged as anadj, pronounced [ˈot̪ɾa].

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 42706, this pair ranks #146,739 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Osma vs otra

Shared letters: ao. Private to "Osma": ms. Private to "otra": rt.

"Osma" · 4 letters · shape VCCV  ·  "otra" · 4 letters · shape VCCV

Known mistypes of this pair

  • Osmaomsa · osam · osmma · ossma · soma
  • otraorta · otar · otrra · ottra · tora

Frequently Asked Questions

Can "Osma" and "otra" be used interchangeably?
No - they are not even the same part of speech. "Osma" is a name and "otra" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "Osma" or "otra" show up more?
"otra" is the more common of the two: it sits at frequency rank #106 in our Spanish list, against #42,600 for "Osma". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "Osma" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "otra" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #146,739 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "Osma" and "otra" also get mixed up with nearby pairs, the highest-scored neighbour is "oirá vs Osma". 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 #146,739 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