come up vs generate

come up and generate both are verbs.

Word	Noun	Adjective	Verb	Adverb
come up	No	No	Yes	No
generate	No	No	Yes	No

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

Other hypernyms of come up include bring forth.

come up (verb)	generate (verb)
result or issue	make (offspring) by reproduction
start running, functioning, or operating	produce, create
gather or bring together	produce (energy)
gather (money or other resources) together over time	give or supply
bring forth, usually something desirable
come up, of celestial bodies
come to the surface
move toward, travel toward something or somebody or approach something or somebody
move upward
get something or somebody for a specific purpose
originate or come into being
be mentioned