sustain vs bear on

sustain and bear on both are verbs.

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

As verbs, bear on is a hypernym of sustain; that is, bear on is a word with a broader meaning than sustain:

Other hypernyms of sustain include carry on, continue, preserve, uphold.

sustain (verb)	bear on (verb)
undergo (as of injuries and illnesses)	have an effect upon
establish or strengthen as with new evidence or facts	press, drive, or impel (someone) to action or completion of an action
admit as valid	be relevant to
supply with necessities and support	keep or maintain in unaltered condition; cause to remain or last
provide with nourishment
be the physical support of; carry the weight of
lengthen or extend in duration or space