cool off vs change state

cool off and change state both are verbs.

Word	Noun	Adjective	Verb	Adverb
cool off	No	No	Yes	No
change state	No	No	Yes	No

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

Other hypernyms of cool off include turn.

cool off (verb)	change state (verb)
lose intensity	undergo a transformation or a change of position or action
become quiet or calm, especially after a state of agitation
feel less enamoured of something or somebody