genre vs steampunk

genre and steampunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
genre	Yes	No	No	No
steampunk	Yes	No	No	No

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

genre: a style of expressing yourself in writing
steampunk: A subgenre of speculative science fiction set in an anachronistic 19th century society.

Other hyponyms of genre include drama, prose, form, poesy, poetry, verse, satire.

genre (noun)	steampunk (noun)
a class of art (or artistic endeavor) having a characteristic form or technique	A subgenre of speculative science fiction set in an anachronistic 19th century society.
a kind of literary or artistic work
a style of expressing yourself in writing