octavavsoctavosTell them apart

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

Which to use

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

#10,893
“octava” frequency rank
#15,182
“octavos” frequency rank
26075
confusion score

Side-by-Side Comparison

Feature octava octavos
Definition Forma del femenino de octavo. Forma del plural de octavo.

Where the eye mixes octava and octavos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. octava runs 6 letters (VCCVCV) against octavos's 7 (VCCVCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
octava
7 ch
octavos

Why the eye confuses octava with octavos

These two trip readers on the page rather than in the ear: octava is [okˈt̪aβ̞a] while octavos is [okˈt̪aβ̞os]. 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 26075, derived from the frequency rank of both members and their visual similarity.

octava is recorded at frequency rank #10,893, classified as anadj, pronounced [okˈt̪aβ̞a]. octavos is at rank #15,182, tagged as anoun, pronounced [okˈt̪aβ̞os].

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 26075, this pair ranks #233,449 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of octava vs octavos

Shared letters: acotv. Private to "octava": -. Private to "octavos": s.

"octava" · 6 letters · shape VCCVCV  ·  "octavos" · 7 letters · shape VCCVCVC

Known mistypes of this pair

  • octava ← cotava · ocatva · occtava · octaav · octaba · octavva · octtava · octvaa
  • octavos ← cotavos · ocatvos · occtavos · octabos · octaovs · octavoss · octavso · octavvos

Frequently Asked Questions

Do "octava" and "octavos" mean the same thing in a sentence?
No - they are not even the same part of speech. "octava" is an adjective and "octavos" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "octava" or "octavos"?
"octava" is the more common of the two: it sits at frequency rank #10,893 in our Spanish list, against #15,182 for "octavos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "octava" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "octavos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #233,449 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "octava" and "octavos" also get mixed up with nearby pairs, the highest-scored neighbour is "octavas vs octavos". 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 #233,449 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