come up vs travel

come up is not a noun while travel is a noun.

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

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

come up: move toward, travel toward something or somebody or approach something or somebody
travel: change location; move, travel, or proceed, also metaphorically

Other hypernyms of come up include go, locomote, move.

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

Other hypernyms of come up include go, locomote, move.

come up (noun)	travel (noun)
	the act of going from one place to another
	self-propelled movement
	a movement through space that changes the location of something

come up (verb)	travel (verb)
result or issue	change location; move, travel, or proceed, also metaphorically
start running, functioning, or operating	make a trip for pleasure
gather or bring together	travel upon or across
gather (money or other resources) together over time	undergo transportation as in a vehicle
bring forth, usually something desirable	undertake a journey or trip
come up, of celestial bodies	travel from place to place, as for the purpose of finding work, preaching, or acting as a judge
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