Which to use
“ocaso” is a noun and “octavo” is a num - they look or sound alike but fill different roles in a sentence.
- #22,437
- “ocaso” frequency rank
- #9,504
- “octavo” frequency rank
- 31941
- confusion score
Side-by-Side Comparison
| Feature | ocaso | octavo |
|---|---|---|
| Definition | Momento en que un astro se oculta a la vista, bajo el horizonte. | Que ocupa el puesto siguiente al séptimo en una serie ordenada. Ordinal del ocho. |
Where the eye mixes ocaso and octavo
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between ocaso and octavo
These two trip readers on the page rather than in the ear: ocaso is [oˈkaso] while octavo is [okˈt̪aβ̞o]. 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 (noun vs num), which is usually the fastest check. Our composite confusion score for this pair is 31941, derived from the frequency rank of both members and their visual similarity.
ocaso is recorded at frequency rank #22,437, classified as anoun, pronounced [oˈkaso]. octavo is at rank #9,504, tagged as anum, pronounced [okˈt̪aβ̞o].
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 31941, this pair ranks #204,530 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ocaso vs octavo
Shared letters: aco. Private to "ocaso": s. Private to "octavo": tv.
"ocaso" · 5 letters · shape VCVCV · "octavo" · 6 letters · shape VCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "ocaso" for "octavo" ever safe?
Which is more common, "ocaso" or "octavo"?
Useful next steps
Eye-level mix-up between "ocaso" and "octavo" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ocaso" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "octavo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #204,530 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "ocaso" and "octavo" also get mixed up with nearby pairs, the highest-scored neighbour is "octavas vs octavo". 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 #204,530 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.