óseavsostWhich spelling fits?

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

Which to use

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

#11,696
“ósea” frequency rank
#33,259
“ost” frequency rank
44955
confusion score

Side-by-Side Comparison

Feature ósea ost
Definition Forma del femenino singular de óseo. Queso.

Where the eye mixes ósea and ost

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

4 ch
ósea
3 ch
ost

Look-alike desk: ósea vs ost

These two trip readers on the page rather than in the ear: ósea is [ˈosea] while ost is [ˈʊst]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 44955, derived from the frequency rank of both members and their visual similarity.

ósea is recorded at frequency rank #11,696, classified as anadj, pronounced [ˈosea]. ost is at rank #33,259, tagged as anoun, pronounced [ˈʊst].

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 44955, this pair ranks #134,142 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ósea vs ost

Shared letters: s. Private to "ósea": aeó. Private to "ost": ot.

"ósea" · 4 letters · shape VCVV  ·  "ost" · 3 letters · shape VCC

Frequently Asked Questions

Can "ósea" and "ost" be used interchangeably?
No - they are not even the same part of speech. "ósea" is an adjective and "ost" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "ósea" or "ost" show up more?
"ósea" is the more common of the two: it sits at frequency rank #11,696 in our Spanish list, against #33,259 for "ost". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "ósea" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ost" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #134,142 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ósea" and "ost" also get mixed up with nearby pairs, the highest-scored neighbour is "ome vs ost". Nearby pair

Confusion rank #134,142 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