ignore vs pass off

ignore and pass off both are verbs.

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

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

ignore (verb)	pass off (verb)
be ignorant of or in the dark about	expel (gases or odors)
give little or no attention to	come to pass
bar from attention or consideration	disappear gradually
refuse to acknowledge	disregard
fail to notice	cause to be circulated and accepted in a false character or identity
	be accepted as something or somebody in a false character or identity