usage vs exploitation

usage and exploitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
usage	Yes	No	No	No
exploitation	Yes	No	No	No

As nouns, exploitation is a hyponym of usage; that is, exploitation is a word with a more specific, narrower meaning than usage:

usage: the act of using
exploitation: the act of making some area of land or water more profitable or productive or useful

usage (noun)	exploitation (noun)
the act of using	the act of making some area of land or water more profitable or productive or useful
accepted or habitual practice	an act that exploits or victimizes someone (treats them unfairly)
the customary manner in which a language (or a form of a language) is spoken or written