Difference between to be careful and to worry in Korean
주의하다·걱정하다

주의하다to be careful
주의하다 means to be careful or to pay attention so that nothing bad happens. You can use it for safety, rules, or small mistakes in daily life. People often say it when crossing the street, touching hot things, or listening to important instructions.

걱정하다to worry
걱정하다 means to worry or feel concerned about something. You use it when you think something bad might happen or when you care about a problem. In Korean, people often use it for family, school, health, money, or travel.
The difference
to be careful (주의하다) and to worry (걱정하다) are nearby Korean vocabulary items learners often meet together. Use “to be careful” when 주의하다 means to be careful or to pay attention so that nothing bad happens. You can use it for safety, rules, or small mistakes in daily li… Use “to worry” when 걱정하다 means to worry or feel concerned about something. You use it when you think something bad might happen or when you care about a prob…