weaken vs disappear

weaken and disappear both are verbs.

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

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

weaken (verb)	disappear (verb)
become weaker	get lost, as without warning or explanation
lessen the strength of	cease to exist
reduce the level or intensity or size or scope of	become less intense and fade away gradually
lessen in force or effect	become invisible or unnoticeable
destroy property or hinder normal operations