become vs metamorphose

become and metamorphose both are verbs.

Word	Noun	Adjective	Verb	Adverb
become	No	No	Yes	No
metamorphose	No	No	Yes	No

As verbs, metamorphose is a hypernym of become; that is, metamorphose is a word with a broader meaning than become:

Other hypernyms of become include transform, transmute.

become (verb)	metamorphose (verb)
enter or assume a certain state or condition	change completely the nature or appearance of
come into existence	change in outward structure or looks
undergo a change or development
enhance the appearance of