bear down vs weigh down

bear down and weigh down both are verbs.

Word	Noun	Adjective	Verb	Adverb
bear down	No	No	Yes	No
weigh down	No	No	Yes	No

As verbs, bear down and weigh down are synonyms defined as:

Other synonyms of bear down include bear down on, drag down, press down on.

bear down (verb)	weigh down (verb)
exert a force or cause a strain upon	exert a force with a heavy weight
pay special attention to	be oppressive or disheartening to
exert full strength
to make a rush at or sudden attack upon, as in battle
exert a force with a heavy weight
contract the abdominal muscles during childbirth to ease delivery