There are several ways to express the idea of relaxation in Engpsh:

"Relax" - This is a verb that means to make or become less tense, anxious, or formal.
"Take it easy" - This is a phrase that means to relax or not to worry.
"Chill out" - This is a phrase that means to relax or calm down.
"Unwind" - This is a verb that means to relax after a period of stress or activity.
"De-stress" - This is a verb that means to reduce stress or tension.

Here are some examples of how these phrases could be used in sentences:

"Just relax and enjoy the movie."
"Don't worry about it, just take it easy."
"I'm going to go home and chill out for a bit."
"After a long day at work, I pke to unwind with a good book."
"I'm going to go for a walk to de-stress after this meeting."