Which to use
“costa” is a noun and “costosa” is an adjective - they look or sound alike but fill different roles in a sentence.
- #841
- “costa” frequency rank
- #18,203
- “costosa” frequency rank
- 19044
- confusion score
Side-by-Side Comparison
| Feature | costa | costosa |
|---|---|---|
| Definition | Región de tierra seca fronteriza con el mar o, por extensión, con una masa de agua (río, lago, etc.). | Forma del femenino de costoso. |
Where the eye mixes costa and costosa
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. costa runs 5 letters (CVCCV) against costosa's 7 (CVCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: costa vs costosa
These two trip readers on the page rather than in the ear: costa is [ˈkost̪a] while costosa is [kosˈt̪osa]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 19044, derived from the frequency rank of both members and their visual similarity.
costa is recorded at frequency rank #841, classified as anoun, pronounced [ˈkost̪a]. costosa is at rank #18,203, tagged as anadj, pronounced [kosˈt̪osa].
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 19044, this pair ranks #265,427 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of costa vs costosa
Shared letters: acost. Private to "costa": -. Private to "costosa": -.
"costa" · 5 letters · shape CVCCV · "costosa" · 7 letters · shape CVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "costa" and "costosa" mean the same thing in a sentence?
In ordinary Spanish text, does "costa" or "costosa" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "costa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "costosa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #265,427 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "costa" and "costosa" also get mixed up with nearby pairs, the highest-scored neighbour is "costosa vs costra". 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 #265,427 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.