face off vs bully off

face off and bully off both are verbs.

Word	Noun	Adjective	Verb	Adverb
face off	No	No	Yes	No
bully off	No	No	Yes	No

As verbs, face off and bully off are synonyms defined as:

face off (verb)	bully off (verb)
start a game by a face-off	start a game by a face-off