mill about vs mess about

mill about and mess about both are verbs.

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

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

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

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

mill about (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