impact vs bear on

impact is a noun but bear on is not a noun.

Word	Noun	Adjective	Verb	Adverb
impact	Yes	No	Yes	No
bear on	No	No	Yes	No

As verbs, impact and bear on are synonyms defined as:

Other synonyms of impact include affect, bear upon, touch, touch on.

impact (noun)	bear on (noun)
influencing strongly
the violent interaction of individuals or groups entering into combat
the striking of one body against another
a forceful consequence; a strong effect

impact (verb)	bear on (verb)
have an effect upon	have an effect upon
press or wedge together; pack together	press, drive, or impel (someone) to action or completion of an action
	be relevant to
	keep or maintain in unaltered condition; cause to remain or last