act involuntarily vs behave

act involuntarily and behave both are verbs.

Word	Noun	Adjective	Verb	Adverb
act involuntarily	No	No	Yes	No
behave	No	No	Yes	No

As verbs, behave is a hypernym of act involuntarily; that is, behave is a word with a broader meaning than act involuntarily:

act involuntarily: act in an uncontrolled manner
behave: behave in a certain manner; show a certain behavior; conduct or comport oneself

Other hypernyms of act involuntarily include acquit, act, bear, carry, comport, conduct, deport, do.

act involuntarily (verb)	behave (verb)
act in an uncontrolled manner	behave in a certain manner; show a certain behavior; conduct or comport oneself
	behave well or properly