Which to use
“cost” is a verb and “CSA” is a name - they look or sound alike but fill different roles in a sentence.
- #568
- “cost” frequency rank
- #23,797
- “CSA” frequency rank
- 24365
- confusion score
Side-by-Side Comparison
| Feature | cost | CSA |
|---|---|---|
| Definition | To incur a charge of; to require payment of a (specified) price. | Initialism of Canadian Space Agency. |
Letter map: cost vs CSA
Shared letters muted; letters that set cost and CSA apart highlighted. Shared run: 2.
Grammar separator: cost vs CSA
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: cost is averb and CSAaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 24365, derived from the frequency rank of both members and their visual similarity.
cost is recorded at frequency rank #568, classified as averb, pronounced /ˈkɒst/. CSA is at rank #23,797, tagged as aname.
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 24365, this pair ranks #402,487 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of cost vs CSA
Shared letters: cs. Private to "cost": ot. Private to "CSA": a.
"cost" · 4 letters · shape CVCC · "CSA" · 3 letters · shape CCV
Known mistypes of this pair
- cost ← ccost · cosst · costt · cots · csot · ocst
Frequently Asked Questions
Can "cost" and "CSA" be used interchangeably?
In ordinary English text, does "cost" or "CSA" show up more?
Useful next steps
Pair "cost" vs "CSA" is on the table, pick a follow-up below.
- Full dictionary entry for "cost" 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 #402,487 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "cost" and "CSA" also get mixed up with nearby pairs, the highest-scored neighbour is "CGT 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 #402,487 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.