take a breather vs catch one's breath

take a breather and catch one's breath both are verbs.

Word	Noun	Adjective	Verb	Adverb
take a breather	No	No	Yes	No
catch one's breath	No	No	Yes	No

As verbs, take a breather and catch one's breath are synonyms defined as:

take a breather and catch one's breath: take a short break from one's activities in order to relax

Other synonyms of take a breather include breathe, rest.

take a breather (verb)	catch one's breath (verb)
take a short break from one's activities in order to relax	take a short break from one's activities in order to relax