sabotage vs weaken

sabotage is a noun but weaken is not a noun.

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

As verbs, sabotage and weaken are synonyms defined as:

Other synonyms of sabotage include counteract, countermine, subvert, undermine.

sabotage (noun)	weaken (noun)
a deliberate act of destruction or disruption in which equipment is damaged

sabotage (verb)	weaken (verb)
destroy property or hinder normal operations	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