hang around vs mill around

hang around and mill around both are verbs.

Word	Noun	Adjective	Verb	Adverb
hang around	No	No	Yes	No
mill around	No	No	Yes	No

As verbs, hang around and mill around are synonyms defined as:

hang around and mill around: be about a place without any apparent purpose

Other synonyms of hang around include footle, lallygag, linger, loaf, loiter, lollygag, lounge, lurk, mess about, mill about, tarry.

hang around (verb)	mill around (verb)
be about a place without any apparent purpose	move about in a confused manner
	be about a place without any apparent purpose