loosen up vs change state

loosen up and change state both are verbs.

Word	Noun	Adjective	Verb	Adverb
loosen up	No	No	Yes	No
change state	No	No	Yes	No

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

Other hypernyms of loosen up include turn.

loosen up (verb)	change state (verb)
become less tense, rest, or take one's ease	undergo a transformation or a change of position or action
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