vegetate vs loosen up

vegetate and loosen up both are verbs.

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

As verbs, loosen up is a hypernym of vegetate; that is, loosen up is a word with a broader meaning than vegetate:

Other hypernyms of vegetate include decompress, relax, slow down, unbend, unwind.

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