Difference between to distinguish and to select in Korean

구별하다·선정하다

to distinguish — 구별하다to distinguish
To distinguish means to see or know the difference between two or more things. You use it when things look, sound, or seem similar, but you can still tell them apart. In Korean, 구별하다 is often used for people, colors, voices, places, or objects.
How to say to distinguish

to select — 선정하다to select
선정하다 means to select one person or thing from several choices. It is often used when the choice feels official, such as picking a class leader, winner, or team member. You may hear it at school, work, contests, or events.
How to say to select

The difference

구별하다 means to tell things apart by noticing differences. 선정하다 means to choose one option from several.