gastronomy vs art

gastronomy and art both are nouns.

Word	Noun	Adjective	Verb	Adverb
gastronomy	Yes	No	No	No
art	Yes	No	No	No

As nouns, art is a hypernym of gastronomy; that is, art is a word with a broader meaning than gastronomy:

gastronomy: the art and practice of choosing and preparing and eating good food
art: the creation of beautiful or significant things

Other hypernyms of gastronomy include artistic creation, artistic production.

gastronomy (noun)	art (noun)
the art and practice of choosing and preparing and eating good food	the creation of beautiful or significant things
a particular style of cookery (as of a region)	the products of human creativity; works of art collectively
	a superior skill that you can learn by study and practice and observation
	photographs or other visual representations in a printed publication