Which to use
“cosa” and “CST” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,679
- “cosa” frequency rank
- #34,048
- “CST” frequency rank
- 80727
- confusion score
Side-by-Side Comparison
| Feature | cosa | CST |
|---|---|---|
| Definition | Variante du IXᵉ siècle de chose. | Cellule souche tumorale. |
Where the eye mixes cosa and CST
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between cosa and CST
A purely visual mix-up. cosa (\ˈkɔza ~ˈkɔzə\) and CST (\se.ɛs.te\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 80727, derived from the frequency rank of both members and their visual similarity.
cosa is recorded at frequency rank #46,679, classified as anoun, pronounced \ˈkɔza ~ˈkɔzə\. CST is at rank #34,048, tagged as anoun, pronounced \se.ɛs.te\.
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 80727, this pair ranks #20,292 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of cosa vs CST
Shared letters: cs. Private to "cosa": ao. Private to "CST": t.
"cosa" · 4 letters · shape CVCV · "CST" · 3 letters · shape CCC
Known mistypes of this pair
- cosa ← ccosa · coas · cossa · csoa · ocsa
Frequently Asked Questions
Do "cosa" and "CST" mean the same thing in a sentence?
Which is more common, "cosa" or "CST"?
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 "cosa" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "CST" - compare definitions side by side with the headword page. Word entry
- This pair ranks #20,292 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "cosa" and "CST" also get mixed up with nearby pairs, the highest-scored neighbour is "cosa vs coupa". 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 #20,292 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.