concur vs pass off

concur and pass off both are verbs.

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

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

Other hypernyms of concur include come about, fall out, go on, hap, happen, occur, pass, take place.

concur (verb)	pass off (verb)
happen simultaneously	expel (gases or odors)
be in accord; be in agreement	come to pass
	disappear gradually
	disregard
	cause to be circulated and accepted in a false character or identity
	be accepted as something or somebody in a false character or identity