decreased vs weakened

decreased and weakened both are adjectives.

Word	Noun	Adjective	Verb	Adverb
decreased	No	Yes	No	No
weakened	No	Yes	No	No

decreased (adjective)	weakened (adjective)
made less in size or amount or degree	damaged; used of inanimate objects or their value
	reduced in strength
	mixed with water
	impaired by diminution
	made weak or weaker