mastermind vs genius

mastermind and genius both are nouns.

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

As nouns, mastermind and genius are synonyms defined as:

mastermind and genius: someone who has exceptional intellectual ability and originality

Other synonyms of mastermind include brain, brainiac, Einstein.

mastermind (noun)	genius (noun)
someone who creates new things	exceptional creative ability
someone who has exceptional intellectual ability and originality	a natural talent
	unusual mental ability
	someone who has exceptional intellectual ability and originality
	someone who is dazzlingly skilled in any field

mastermind (verb)	genius (verb)
plan and direct (a complex undertaking)