disobey vs weaken

disobey and weaken both are verbs.

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

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

Other hyponyms of disobey include sit in, counteract, countermine, sabotage, subvert, undermine, balk, baulk, jib, resist.

disobey (verb)	weaken (verb)
refuse to go along with; refuse to follow; be disobedient	become weaker
	lessen the strength of
	reduce the level or intensity or size or scope of
	lessen in force or effect
	destroy property or hinder normal operations