moon around vs idle

moon around is not a noun while idle is a noun.

Word	Noun	Adjective	Verb	Adverb
moon around	No	No	Yes	No
idle	Yes	Yes	Yes	No

As verbs, idle is a hypernym of moon around; that is, idle is a word with a broader meaning than moon around:

Other hypernyms of moon around include laze, slug, stagnate.

moon around (noun)	idle (noun)
	the state of an engine or other mechanism that is idling

moon around (adjective)	idle (adjective)
	not in action or at work
	silly or trivial
	not in active use
	lacking a sense of restraint or responsibility
	not having a job
	not yielding a return
	without a basis in reason or fact

moon around (verb)	idle (verb)
be apathetic, gloomy, or dazed	run disconnected or idle
be idle in a listless or dreamy way	be idle; exist in a changeless situation