holometaboly vs metamorphosis

holometaboly and metamorphosis both are nouns.

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

As nouns, metamorphosis is a hypernym of holometaboly; that is, metamorphosis is a word with a broader meaning than holometaboly:

holometaboly: complete metamorphosis in insects
metamorphosis: the marked and rapid transformation of a larva into an adult that occurs in some animals

Other hypernyms of holometaboly include metabolism.

holometaboly (noun)	metamorphosis (noun)
complete metamorphosis in insects	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