enjoyment vs fair use

enjoyment and fair use both are nouns.

Word	Noun	Adjective	Verb	Adverb
enjoyment	Yes	No	No	No
fair use	Yes	No	No	No

As nouns, fair use is a hyponym of enjoyment; that is, fair use is a word with a more specific, narrower meaning than enjoyment:

enjoyment: (law) the exercise of the legal right to enjoy the benefits of owning property
fair use: the conditions under which you can use material that is copyrighted by someone else without paying royalties

Other hyponyms of enjoyment include fruition.

enjoyment (noun)	fair use (noun)
act of receiving pleasure from something	the conditions under which you can use material that is copyrighted by someone else without paying royalties
(law) the exercise of the legal right to enjoy the benefits of owning property
the pleasure felt when having a good time