enjoyment vs gusto

enjoyment and gusto both are nouns.

Word	Noun	Adjective	Verb	Adverb
enjoyment	Yes	No	No	No
gusto	Yes	No	No	No

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

Other hyponyms of enjoyment include joie de vivre, relish, zest, zestfulness.

enjoyment (noun)	gusto (noun)
act of receiving pleasure from something	vigorous and enthusiastic enjoyment
(law) the exercise of the legal right to enjoy the benefits of owning property
the pleasure felt when having a good time