mastermind vs creator

mastermind and creator both are nouns.

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

As nouns, creator is a hypernym of mastermind; that is, creator is a word with a broader meaning than mastermind:

mastermind (noun)	creator (noun)
someone who creates new things	a person who grows or makes or invents things
someone who has exceptional intellectual ability and originality

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