loosen up vs veg out

loosen up and veg out both are verbs.

Word	Noun	Adjective	Verb	Adverb
loosen up	No	No	Yes	No
veg out	No	No	Yes	No

As verbs, veg out is a hyponym of loosen up; that is, veg out is a word with a more specific, narrower meaning than loosen up:

Other hyponyms of loosen up include vegetate, sit back, take it easy.

loosen up (verb)	veg out (verb)
become less tense, rest, or take one's ease	engage in passive relaxation
cause to feel relaxed
make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity
cause to become unblocked
become less tense, less formal, or less restrained, and assume a friendlier manner