TOS vs TS, What's the Difference?

Which to use

“TOS” is a noun and “TS” is an adjective - they look or sound alike but fill different roles in a sentence.

#19,720
“TOS” frequency rank: #11,815
“TS” frequency rank: 31535
confusion score

Side-by-Side Comparison

Feature	TOS	TS
Definition	Initialism of terms of service.	Abbreviation of transsexual.

Letter map: TOS vs TS

Shared letters muted; letters that set TOS and TS apart highlighted. Shared run: 2.

3 ch

TOS

2 ch

Role in the sentence - TOS and TS

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: TOS is anoun and TSanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31535, derived from the frequency rank of both members and their visual similarity.

TOS is recorded at frequency rank #19,720, classified as anoun, pronounced /tiː əʊ ɛs/. TS is at rank #11,815, tagged as anadj.

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 31535, this pair ranks #345,290 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of TOS vs TS

Shared letters: st. Private to "TOS": o. Private to "TS": -.

"TOS" · 3 letters · shape CVC · "TS" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "TOS" for "TS" ever safe?

No - they are not even the same part of speech. "TOS" is a noun and "TS" an adjective, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "TOS" or "TS" show up more?

"TS" is the more common of the two: it sits at frequency rank #11,815 in our English list, against #19,720 for "TOS". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "TOS" and "TS". Here's where to go from here.

Full dictionary entry for "TOS" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "TS" - compare definitions side by side with the headword page. Word entry
This pair ranks #345,290 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"TOS" and "TS" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs TOS". Nearby pair

Confusion rank #345,290 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.