initiate vs polymath

initiate and polymath both are nouns.

Word	Noun	Adjective	Verb	Adverb
initiate	Yes	No	Yes	No
polymath	Yes	No	No	No

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

initiate (noun)	polymath (noun)
people who have been introduced to the mysteries of some field or activity	a person of great and varied learning
someone who has been admitted to membership in a scholarly field
someone new to a field or activity

initiate (verb)	polymath (verb)
set in motion, start an event or prepare the way for
bring up a topic for discussion
take the lead or initiative in; participate in the development of
bring into being
accept people into an exclusive society or group, usually with some rite