sous vs STS, What's the Difference?

Which to use

“sous” and “STS” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#25,213
“sous” frequency rank: #20,790
“STS” frequency rank: 46003
confusion score

Side-by-Side Comparison

Feature	sous	STS
Definition	plural of sou	Initialism of science and technology studies.

Letter map: sous vs STS

Shared letters muted; letters that set sous and STS apart highlighted. Shared run: 2.

4 ch

sous

3 ch

STS

Corpus notes: sous and STS

sous and STS are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 46003, derived from the frequency rank of both members and their visual similarity.

sous is recorded at frequency rank #25,213, classified as anoun, pronounced /suːz/. STS is at rank #20,790, tagged as anoun.

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 46003, this pair ranks #215,916 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sous vs STS

Shared letters: s. Private to "sous": ou. Private to "STS": t.

"sous" · 4 letters · shape CVVC · "STS" · 3 letters · shape CCC

Known mistypes of this pair

sous ← osus · sosu · souss · ssous · suos

Frequently Asked Questions

Can "sous" and "STS" be used interchangeably?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "sous" vs "STS" - which ranks higher?

"STS" is the more common of the two: it sits at frequency rank #20,790 in our English list, against #25,213 for "sous". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "sous" vs "STS" is on the table, pick a follow-up below.

Full dictionary entry for "sous" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "STS" - compare definitions side by side with the headword page. Word entry
This pair ranks #215,916 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"sous" and "STS" also get mixed up with nearby pairs, the highest-scored neighbour is "sous vs suds". 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 #215,916 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.