deafen vs weaken

deafen and weaken both are verbs.

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

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

Other hypernyms of deafen include break, damp, dampen, soften.

deafen (verb)	weaken (verb)
make soundproof	become weaker
make or render deaf	lessen the strength of
be unbearably loud	reduce the level or intensity or size or scope of
	lessen in force or effect
	destroy property or hinder normal operations