enthusiastic vs crazy

enthusiastic is not a noun while crazy is a noun.

Word	Noun	Adjective	Verb	Adverb
enthusiastic	No	Yes	No	No
crazy	Yes	Yes	No	No

enthusiastic (noun)	crazy (noun)
	someone deranged and possibly dangerous

enthusiastic (adjective)	crazy (adjective)
having or showing great excitement and interest	intensely enthusiastic about or preoccupied with
	possessed by inordinate excitement
	foolish; totally unsound
	affected with madness or insanity
	bizarre or fantastic