Difference between to find out and to know in Korean
알아내다·알다

알아내다to find out
알아내다 means to find out or discover information after looking, asking, or thinking. You use it when something was not known at first, but then you learn the answer. It is common for things like times, prices, names, places, or the reason for something.

알다to know
알다 (to know) means to have information in your mind or to be familiar with someone, something, or a place. You use it when you know a fact, know a person, or know the answer. It is very common in daily Korean, especially in sentences like "I know" and "Do you know?".
The difference
to find out (알아내다) and to know (알다) are nearby Korean vocabulary items learners often meet together. Use “to find out” when 알아내다 means to find out or discover information after looking, asking, or thinking. You use it when something was not known at first, but… Use “to know” when 알다 (to know) means to have information in your mind or to be familiar with someone, something, or a place. You use it when you know a fac…