pass up vs ignore

pass up and ignore both are verbs.

Word	Noun	Adjective	Verb	Adverb
pass up	No	No	Yes	No
ignore	No	No	Yes	No

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

pass up (verb)	ignore (verb)
fail to acknowledge	be ignorant of or in the dark about
not accept as true	give little or no attention to
	bar from attention or consideration
	refuse to acknowledge
	fail to notice