loosen up vs vegetate

loosen up and vegetate both are verbs.

Word	Noun	Adjective	Verb	Adverb
loosen up	No	No	Yes	No
vegetate	No	No	Yes	No

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

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

loosen up (verb)	vegetate (verb)
become less tense, rest, or take one's ease	engage in passive relaxation
cause to feel relaxed	propagate asexually
make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity	grow like a plant
cause to become unblocked	produce vegetation
become less tense, less formal, or less restrained, and assume a friendlier manner	establish vegetation on
	grow or spread abnormally
	lead a passive existence without using one's body or mind