Which to use
“STS” and “sum” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #40,514
- “STS” frequency rank
- #30,825
- “sum” frequency rank
- 71339
- confusion score
Side-by-Side Comparison
| Feature | STS | sum |
|---|---|---|
| Definition | Navette spatiale américaine ayant effectué 135 vols pour l'agence spatiale américaine (NASA) entre le 12 avril 1981 et juillet 2011. | Unité monétaire utilisée en Ouzbékistan |
Where the eye mixes STS and sum
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses STS with sum
A purely visual mix-up. STS (\ɛs te ɛs\) and sum (\sum\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 71339, derived from the frequency rank of both members and their visual similarity.
STS is recorded at frequency rank #40,514, classified as anoun, pronounced \ɛs te ɛs\. sum is at rank #30,825, tagged as anoun, pronounced \sum\.
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 71339, this pair ranks #47,895 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of STS vs sum
Shared letters: s. Private to "STS": t. Private to "sum": mu.
"STS" · 3 letters · shape CCC · "sum" · 3 letters · shape CVC
Frequently Asked Questions
Can "STS" and "sum" be used interchangeably?
Frequency check: "STS" vs "sum" - which ranks higher?
What to do next
Eye-level mix-up between "STS" and "sum" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "STS" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #47,895 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "STS" and "sum" also get mixed up with nearby pairs, the highest-scored neighbour is "STS vs suu". Nearby pair
Confusion rank #47,895 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.