castvsCSTTell them apart

Which to use

“cast” and “CST” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#28,476
“cast” frequency rank
#34,048
“CST” frequency rank
62524
confusion score

Side-by-Side Comparison

Feature cast CST
Definition Synonyme de transtypage. Cellule souche tumorale.

Where the eye mixes cast and CST

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
cast
3 ch
CST

Look-alike desk: cast vs CST

A purely visual mix-up. cast (\kast\) 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 62524, derived from the frequency rank of both members and their visual similarity.

cast is recorded at frequency rank #28,476, classified as anoun, pronounced \kast\. 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 62524, this pair ranks #86,629 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of cast vs CST

Shared letters: cst. Private to "cast": a. Private to "CST": -.

"cast" · 4 letters · shape CVCC  ·  "CST" · 3 letters · shape CCC

Known mistypes of this pair

  • castacst · casst · castt · ccast · csat

Frequently Asked Questions

Is swapping "cast" for "CST" ever safe?
No. They are said differently (\kast\ versus \se.ɛs.te\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "cast" vs "CST" - which ranks higher?
"cast" is the more common of the two: it sits at frequency rank #28,476 in our French list, against #34,048 for "CST". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "cast" and "CST" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "cast" 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 #86,629 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cast" 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 #86,629 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list