Which to use
“Stasi” is a name and “STI” is a noun - they look or sound alike but fill different roles in a sentence.
- #37,706
- “Stasi” frequency rank
- #26,266
- “STI” frequency rank
- 63972
- confusion score
Side-by-Side Comparison
| Feature | Stasi | STI |
|---|---|---|
| Definition | The Ministry for State Security, secret police and intelligence organization of the German Democratic Republic (East Germany). | Initialism of sexually transmitted infection (also S.T.I.). |
Letter map: Stasi vs STI
Shared letters muted; letters that set Stasi and STI apart highlighted. Shared run: 3.
Part-of-speech tell for Stasi / STI
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Stasi is aname and STIanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 63972, derived from the frequency rank of both members and their visual similarity.
Stasi is recorded at frequency rank #37,706, classified as aname, pronounced /ˈstɑːzi/. STI is at rank #26,266, 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 63972, this pair ranks #80,139 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of Stasi vs STI
Shared letters: ist. Private to "Stasi": a. Private to "STI": -.
"Stasi" · 5 letters · shape CCVCV · "STI" · 3 letters · shape CCV
Known mistypes of this pair
- Stasi ← satsi · sstasi · stais · stsai · sttasi · tsasi
Frequently Asked Questions
Can "Stasi" and "STI" be used interchangeably?
Frequency check: "Stasi" vs "STI" - which ranks higher?
Useful next steps
You've compared "Stasi" and "STI". Here's where to go from here.
- Full dictionary entry for "Stasi" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "STI" - compare definitions side by side with the headword page. Word entry
- This pair ranks #80,139 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Stasi" and "STI" also get mixed up with nearby pairs, the highest-scored neighbour is "staph vs Stasi". 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 #80,139 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.