talent vs genius

talent and genius both are nouns.

Word	Noun	Adjective	Verb	Adverb
talent	Yes	No	No	No
genius	Yes	No	No	No

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

Other hyponyms of talent include bent, hang, knack, flair, raw talent.

talent (noun)	genius (noun)
natural abilities or qualities	exceptional creative ability
a person who possesses unusual innate ability in some field or activity	a natural talent
	unusual mental ability
	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field