1, relax means don't be nervous and don't panic.
Don't be nervous, just hold your horses; Don't worry; Take your time, take your time; Be careful, be careful
Relax, slow and steady, don't try so hard, relax, relax, relax; Laziness; rest
Don't worry, don't be angry, don't take it to heart.
[Sometimes used to say goodbye] Take care! Goodbye!
For example:
Relax. We will take care of everything. Don't worry. We will take care of everything.
Don't worry means "don't worry" and "don't worry"
Example: Oh. Don't worry. Be happy. You can do better next time.
Oh, don't worry. Cheer up. You will do better next time.