metamorphous vs metamorphosis

metamorphous is not a noun while metamorphosis is a noun.

Word	Noun	Adjective	Verb	Adverb
metamorphous	No	Yes	No	No
metamorphosis	Yes	No	No	No

metamorphous (noun)	metamorphosis (noun)
	a complete change of physical form or substance especially as by magic or witchcraft
	a striking change in appearance or character or circumstances
	the marked and rapid transformation of a larva into an adult that occurs in some animals

metamorphous (adjective)	metamorphosis (adjective)
of or relating to metamorphosis (especially of rocks)
produced by metamorphosis