bear on vs hang on

bear on and hang on both are verbs.

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

As verbs, hang on is a hyponym of bear on; that is, hang on is a word with a more specific, narrower meaning than bear on:

bear on (verb)	hang on (verb)
have an effect upon	be persistent, refuse to stop
press, drive, or impel (someone) to action or completion of an action	hold the phone line open
be relevant to	fix to; attach
keep or maintain in unaltered condition; cause to remain or last