Some or Sum ?
Your choice!
Some
Exemple : ‘’I am going to have some now and save the rest for later.’’
"Some" and "sum" are homonyms and because of this they are often mixed up. "Some" is an adjective used to denote an unknown amount which is generally large but not the whole of something.
Sum
Exemple : ‘’I was awarded a good sum of money for the scholarship.’’
"Sum" is a noun used to denote an amount of money or the total of something.