Difference between to sleep and to fall asleep in Korean
잠자다·잠들다

잠자다to sleep
"To sleep" means to rest with your eyes closed, usually at night or during a nap. In Korean, 잠자다 is used when someone goes to sleep or is sleeping. You can use it for people and animals in everyday situations.

잠들다to fall asleep
'To fall asleep' (잠들다) means to begin sleeping. Use it when someone changes from being awake to sleeping. You can use it in everyday situations for people or animals, such as at home, on the bus, or in class.
The difference
to sleep (잠자다) and to fall asleep (잠들다) are nearby Korean vocabulary items learners often meet together. Use “to sleep” when "To sleep" means to rest with your eyes closed, usually at night or during a nap. In Korean, 잠자다 is used when someone goes to sleep or is… Use “to fall asleep” when 'To fall asleep' (잠들다) means to begin sleeping. Use it when someone changes from being awake to sleeping. You can use it in everyday situ…