Which to use
“sou” is a noun and “Sousa” is a name - they look or sound alike but fill different roles in a sentence.
- #35,525
- “sou” frequency rank
- #38,627
- “Sousa” frequency rank
- 74152
- confusion score
Side-by-Side Comparison
| Feature | sou | Sousa |
|---|---|---|
| Definition | An old French copper coin equal to one twentieth of a livre or twelve deniers; one sou is to the livre as one shilling is to the pound. | A surname from Portuguese. |
Letter map: sou vs Sousa
Shared letters muted; letters that set sou and Sousa apart highlighted. Shared run: 3. sou runs 3 letters (CVV) against Sousa's 5 (CVVCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - sou and Sousa
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sou is anoun and Sousaaname. On the page they differ by 2 extra letter(s) - “sou” sits inside “Sousa”. Our composite confusion score for this pair is 74152, derived from the frequency rank of both members and their visual similarity.
sou is recorded at frequency rank #35,525, classified as anoun, pronounced /suː/. Sousa is at rank #38,627, tagged as aname.
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 74152, this pair ranks #37,246 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of sou vs Sousa
Shared letters: osu. Private to "sou": -. Private to "Sousa": a.
"sou" · 3 letters · shape CVV · "Sousa" · 5 letters · shape CVVCV
Known mistypes of this pair
- Sousa ← osusa · sosua · souas · soussa · ssousa · suosa
Frequently Asked Questions
Can "sou" and "Sousa" be used interchangeably?
In ordinary English text, does "sou" or "Sousa" show up more?
What to do next
Pair "sou" vs "Sousa" is on the table, pick a follow-up below.
- Full dictionary entry for "sou" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Sousa" - compare definitions side by side with the headword page. Word entry
- This pair ranks #37,246 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sou" and "Sousa" also get mixed up with nearby pairs, the highest-scored neighbour is "Sousa vs sura". 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 #37,246 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.