come vs become

come is a noun but become is not a noun.

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

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

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

Other hypernyms of come include turn.

come (noun)	become (noun)
the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

come (verb)	become (verb)
come to pass; arrive, as in due course	enter or assume a certain state or condition
be found or available	come into existence
reach or enter a state, relation, condition, use, or position	undergo a change or development
happen as a result	enhance the appearance of
have a certain priority
come to one's mind; suggest itself
move toward, travel toward something or somebody or approach something or somebody
be received
cover a certain distance
reach a destination; arrive by movement or progress
experience orgasm
come under, be classified or included
proceed or get along
extend or reach
to be the product or result
exist or occur in a certain point in a series
be a native of
to measure up to in kind or quality
add up in number or quantity
come forth
come from; be connected by a relationship of blood, for example