mill around vs mess about

mill around and mess about both are verbs.

Word	Noun	Adjective	Verb	Adverb
mill around	No	No	Yes	No
mess about	No	No	Yes	No

As verbs, mill around and mess about are synonyms defined as:

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

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

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