Difference between to forget and to lack in Korean

잊다·모자라다

to forget

잊다to forget

(잊다) means "to forget." Use it when you do not remember something, or when you do not remember to do something. You can use it for names, things, homework, plans, and more.

How to say to forget
to lack

모자라다to lack

모자라다 means there is less than you need. People use it for things like money, time, food, seats, and supplies. In everyday speech, it often means “not enough” or “short of something.”

How to say to lack

The difference

잊다 is about memory, like forgetting a name or homework. 모자라다 is about quantity being not enough.