pass off vs come up

pass off and come up both are verbs.

Word	Noun	Adjective	Verb	Adverb
pass off	No	No	Yes	No
come up	No	No	Yes	No

As verbs, come up is a hyponym of pass off; that is, come up is a word with a more specific, narrower meaning than pass off:

pass off (verb)	come up (verb)
expel (gases or odors)	result or issue
come to pass	start running, functioning, or operating
disappear gradually	gather or bring together
disregard	gather (money or other resources) together over time
cause to be circulated and accepted in a false character or identity	bring forth, usually something desirable
be accepted as something or somebody in a false character or identity	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