some and sum are homophones: they are pronounced identically and spelled differently, which is why they are so often swapped. some means “(quantifier) used with either mass nouns or plural count nouns to indicate an unspecified number or quantity”. sum means “a quantity of money”. some is the more common of the two in everyday English.
/ˈsʌm/
1.adj.(quantifier) used with either mass nouns or plural count nouns to indicate an unspecified number or quantity
“have some milk”
2.adj.relatively much but unspecified in amount or extent
“we talked for some time”
3.adj.relatively many but unspecified in number
“they were here for some weeks”
| some | sum | |
|---|---|---|
| Pronunciation | /ˈsʌm/ | /ˈsʌm/ |
| Said | suhm | suhm |
| Syllables | 1 | 1 |
| Letters | 4 | 3 |
| Parts of speech | adjective, adverb | noun, verb |
| Senses | 5 | 8 |
| How common | Core | Common |
| Synonyms | none recorded | sum of money, amount, amount of money |
/ˈsʌm/
1.n.a quantity of money
“he borrowed a large sum”
2.n.a quantity obtained by the addition of a group of numbers
3.n.the final aggregate
“the sum of all our troubles did not equal the misery they suffered”