flair vs genius

flair and genius both are nouns.

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

As nouns, flair and genius are synonyms defined as:

flair (noun)	genius (noun)
distinctive and stylish elegance	exceptional creative ability
a natural talent	a natural talent
a shape that spreads outward	unusual mental ability
	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field