costa vs CSA, What's the Difference?

Which to use

“costa” is a noun and “CSA” is an abbrev - they look or sound alike but fill different roles in a sentence.

#885
“costa” frequency rank: #21,705
“CSA” frequency rank: 22590
confusion score

Side-by-Side Comparison

Feature	costa	CSA
Definition	interface entre o mar e a terra	sigla de Canadian Space Agency, a Agência Espacial Canadense

Letter map: costa vs CSA

Shared letters muted; letters that set costa and CSA apart highlighted. Shared run: 3.

5 ch

costa

3 ch

CSA

Grammar separator: costa vs CSA

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: costa is anoun and CSAanabbrev. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 22590, derived from the frequency rank of both members and their visual similarity.

costa is recorded at frequency rank #885, classified as anoun, pronounced /ˈkɔʃ.tɐ/. CSA is at rank #21,705, tagged as anabbrev.

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 22590, this pair ranks #47,420 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of costa vs CSA

Shared letters: acs. Private to "costa": ot. Private to "CSA": -.

"costa" · 5 letters · shape CVCCV · "CSA" · 3 letters · shape CCV

Known mistypes of this pair

costa ← ccosta · cosat · cossta · costta · cotsa · csota · ocsta

Frequently Asked Questions

Is swapping "costa" for "CSA" ever safe?

No - they are not even the same part of speech. "costa" is a noun and "CSA" an abbrev, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "costa" or "CSA" show up more?

"costa" is the more common of the two: it sits at frequency rank #885 in our Portuguese list, against #21,705 for "CSA". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "costa" and "CSA".

Full dictionary entry for "costa" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "CSA" - compare definitions side by side with the headword page. Word entry
This pair ranks #47,420 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"costa" and "CSA" also get mixed up with nearby pairs, the highest-scored neighbour is "chau vs CSA". 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 #47,420 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.