weaken vs deaden

weaken and deaden both are verbs.

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

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

weaken: lessen in force or effect
deaden: make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation

Other hypernyms of weaken include blunt.

As verbs, deaden is a hyponym of weaken; that is, deaden is a word with a more specific, narrower meaning than weaken:

Other hyponyms of weaken include deafen, damp, dampen.

weaken (verb)	deaden (verb)
become weaker	become lifeless, less lively, intense, or active; lose life, force, or vigor
lessen the strength of	make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation
reduce the level or intensity or size or scope of	lessen the momentum or velocity of
lessen in force or effect	make vapid or deprive of spirit
destroy property or hinder normal operations	convert (metallic mercury) into a grey powder consisting of minute globules, as by shaking with chalk or fatty oil
	make vague or obscure or make (an image) less visible
	cut a girdle around so as to kill by interrupting the circulation of water and nutrients