used vs exploited

used and exploited both are adjectives.

Word	Noun	Adjective	Verb	Adverb
used	No	Yes	No	No
exploited	No	Yes	No	No

As adjectives, used and exploited are synonyms defined as:

Other synonyms of used include ill-used, put-upon, victimised, victimized.

used (adjective)	exploited (adjective)
employed in accomplishing something	developed or used to greatest advantage
previously used or owned by another	(of persons) taken advantage of
(of persons) taken advantage of