unusual vs antic

unusual is not a noun while antic is a noun.

Word	Noun	Adjective	Verb	Adverb
unusual	No	Yes	No	No
antic	Yes	Yes	Yes	No

unusual (noun)	antic (noun)
	a ludicrous or grotesque act done for fun and amusement

unusual (adjective)	antic (adjective)
not usual or common or ordinary	ludicrously odd
being definitely out of the ordinary and unexpected; slightly odd or even a bit weird
not commonly encountered

unusual (verb)	antic (verb)
	act as or like a clown