obesovsocasoWhat's the difference?

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

Which to use

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

#33,251
“obeso” frequency rank
#22,437
“ocaso” frequency rank
55688
confusion score

Side-by-Side Comparison

Feature obeso ocaso
Definition Dícese de la persona que tiene gordura en demasía. Momento en que un astro se oculta a la vista, bajo el horizonte.

Where the eye mixes obeso and ocaso

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
obeso
5 ch
ocaso

Visual trap between obeso and ocaso

These two trip readers on the page rather than in the ear: obeso is [oˈβ̞eso] while ocaso is [oˈkaso]. 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 55688, derived from the frequency rank of both members and their visual similarity.

obeso is recorded at frequency rank #33,251, classified as anadj, pronounced [oˈβ̞eso]. ocaso is at rank #22,437, tagged as anoun, pronounced [oˈkaso].

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 55688, this pair ranks #77,814 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of obeso vs ocaso

Shared letters: os. Private to "obeso": be. Private to "ocaso": ac.

"obeso" · 5 letters · shape VCVCV  ·  "ocaso" · 5 letters · shape VCVCV

Known mistypes of this pair

  • obesoboeso · obbeso · obeos · obesso · obseo · oebso · oveso
  • ocasocoaso · oacso · ocaos · ocasso · occaso · ocsao

Frequently Asked Questions

Is swapping "obeso" for "ocaso" ever safe?
No - they are not even the same part of speech. "obeso" is an adjective and "ocaso" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "obeso" or "ocaso" show up more?
"ocaso" is the more common of the two: it sits at frequency rank #22,437 in our Spanish list, against #33,251 for "obeso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "obeso" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ocaso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #77,814 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "obeso" and "ocaso" also get mixed up with nearby pairs, the highest-scored neighbour is "obesa vs obeso". 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 #77,814 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