Which to use
“soi” is a verb and “sum” is a noun - they look or sound alike but fill different roles in a sentence.
- #38,396
- “soi” frequency rank
- #27,789
- “sum” frequency rank
- 66185
- confusion score
Side-by-Side Comparison
| Feature | soi | sum |
|---|---|---|
| Definition | Segunda persona singular informal en el voseo chileno (vos) del presente de indicativo del verbo ser. | Suma, adición. |
Where the eye mixes soi and sum
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between soi and sum
These two trip readers on the page rather than in the ear: soi is [ˈsoj] while sum is [sʌm]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 66185, derived from the frequency rank of both members and their visual similarity.
soi is recorded at frequency rank #38,396, classified as averb, pronounced [ˈsoj]. sum is at rank #27,789, tagged as anoun, pronounced [sʌm].
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 66185, this pair ranks #40,528 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of soi vs sum
Shared letters: s. Private to "soi": io. Private to "sum": mu.
"soi" · 3 letters · shape CVV · "sum" · 3 letters · shape CVC
Frequently Asked Questions
Can "soi" and "sum" be used interchangeably?
Frequency check: "soi" vs "sum" - which ranks higher?
Useful next steps
Eye-level mix-up between "soi" and "sum" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "soi" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #40,528 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "soi" and "sum" also get mixed up with nearby pairs, the highest-scored neighbour is "soi vs sous". Nearby pair
Confusion rank #40,528 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.