outsider art vs genre

outsider art and genre both are nouns.

Word	Noun	Adjective	Verb	Adverb
outsider art	Yes	No	No	No
genre	Yes	No	No	No

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

outsider art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists
genre: a class of art (or artistic endeavor) having a characteristic form or technique

outsider art (noun)	genre (noun)
a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists	a class of art (or artistic endeavor) having a characteristic form or technique
	a kind of literary or artistic work
	a style of expressing yourself in writing