Which to use
“cost” and “CST” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #14,234
- “cost” frequency rank
- #34,048
- “CST” frequency rank
- 48282
- confusion score
Side-by-Side Comparison
| Feature | cost | CST |
|---|---|---|
| Definition | Coût. | Cellule souche tumorale. |
Where the eye mixes cost and CST
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between cost and CST
A purely visual mix-up. cost (\kɒst\) 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 48282, derived from the frequency rank of both members and their visual similarity.
cost is recorded at frequency rank #14,234, classified as anoun, pronounced \kɒst\. 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 48282, this pair ranks #180,146 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of cost vs CST
Shared letters: cst. Private to "cost": o. Private to "CST": -.
"cost" · 4 letters · shape CVCC · "CST" · 3 letters · shape CCC
Known mistypes of this pair
- cost ← ccost · cosst · costt · cots · csot · ocst
Frequently Asked Questions
Can "cost" and "CST" be used interchangeably?
Frequency check: "cost" vs "CST" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "cost" 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 #180,146 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "cost" and "CST" also get mixed up with nearby pairs, the highest-scored neighbour is "CCE vs CST". 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 #180,146 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.