Which to use
“spud” and “su” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #42,419
- “spud” frequency rank
- #8,094
- “su” frequency rank
- 50513
- confusion score
Side-by-Side Comparison
| Feature | spud | su |
|---|---|---|
| Definition | A potato. | Alternative form of xu (“former Vietnamese currency”). |
Letter map: spud vs su
Shared letters muted; letters that set spud and su apart highlighted. Shared run: 2.
Spelling & dictionary notes on spud vs su
spud and su 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 2 letter(s) in length. Our composite confusion score for this pair is 50513, derived from the frequency rank of both members and their visual similarity.
spud is recorded at frequency rank #42,419, classified as anoun, pronounced /spʌd/. su is at rank #8,094, 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 50513, this pair ranks #173,592 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of spud vs su
Shared letters: su. Private to "spud": dp. Private to "su": -.
"spud" · 4 letters · shape CCVC · "su" · 2 letters · shape CV
Known mistypes of this pair
- spud ← psud · spdu · sppud · spudd · sspud · supd
Frequently Asked Questions
Can "spud" and "su" be used interchangeably?
Frequency check: "spud" vs "su" - which ranks higher?
Useful next steps
Pair "spud" vs "su" is on the table, pick a follow-up below.
- Full dictionary entry for "spud" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "su" - compare definitions side by side with the headword page. Word entry
- This pair ranks #173,592 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "spud" and "su" also get mixed up with nearby pairs, the highest-scored neighbour is "spud 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 #173,592 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.