depress vs weaken

depress and weaken both are verbs.

Word	Noun	Adjective	Verb	Adverb
depress	No	No	Yes	No
weaken	No	No	Yes	No

As verbs, weaken is a hypernym of depress; that is, weaken is a word with a broader meaning than depress:

depress (verb)	weaken (verb)
lessen the activity or force of	become weaker
press down	lessen the strength of
cause to drop or sink	reduce the level or intensity or size or scope of
lower someone's spirits; make downhearted	lessen in force or effect
lower (prices or markets)	destroy property or hinder normal operations