Which to use
“st” is a symbol and “STS” is a noun - they look or sound alike but fill different roles in a sentence.
- #1,190
- “st” frequency rank
- #40,514
- “STS” frequency rank
- 41704
- confusion score
Side-by-Side Comparison
| Feature | st | STS |
|---|---|---|
| Definition | Symbole de la stère. | Navette spatiale américaine ayant effectué 135 vols pour l'agence spatiale américaine (NASA) entre le 12 avril 1981 et juillet 2011. |
Where the spellings diverge
Shared letters are muted; the letters that actually set st and STS apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
st and STS form a confusable pair in the French index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 extra letter(s) - “st” sits inside “STS” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 41704, derived from the frequency rank of both members and their visual similarity.
st is recorded at frequency rank #1,190, classified as asymbol. STS is at rank #40,514, tagged as anoun, pronounced \ɛs te ɛs\.
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 41704, this pair ranks #231,123 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "st" and "STS" be used interchangeably?
Remembering st vs STS
The fastest way to pick the right one every time.
- Check the role first: if you need a symbol, it's “st”; for a noun, it's “STS”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “st” entry
- Browse more pairs most likely to be confused. Most confusable