writing style vs genre

writing style and genre both are nouns.

Word	Noun	Adjective	Verb	Adverb
writing style	Yes	No	No	No
genre	Yes	No	No	No

As nouns, writing style and genre are synonyms defined as:

Other synonyms of writing style include literary genre.

writing style (noun)	genre (noun)
a style of expressing yourself in writing	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