sake vs purpose

sake and purpose both are nouns.

Word	Noun	Adjective	Verb	Adverb
sake	Yes	No	No	No
purpose	Yes	No	Yes	No

As nouns, purpose is a hypernym of sake; that is, purpose is a word with a broader meaning than sake:

sake: the purpose of achieving or obtaining
purpose: an anticipated outcome that is intended or that guides your planned actions

Other hypernyms of sake include aim, design, intent, intention.

sake (noun)	purpose (noun)
a reason for wanting something done	what something is used for
the purpose of achieving or obtaining	the quality of being determined to do or achieve something; firmness of purpose
Japanese alcoholic beverage made from fermented rice; usually served hot	an anticipated outcome that is intended or that guides your planned actions

sake (verb)	purpose (verb)
	reach a decision
	propose or intend