cheek vs speak

cheek is a noun but speak is not a noun.

Word	Noun	Adjective	Verb	Adverb
cheek	Yes	No	Yes	No
speak	No	No	Yes	No

As verbs, speak is a hypernym of cheek; that is, speak is a word with a broader meaning than cheek:

Other hypernyms of cheek include talk.

cheek (noun)	speak (noun)
impudent aggressiveness
either side of the face below the eyes
either of the two large fleshy masses of muscular tissue that form the human rump
an impudent statement

cheek (verb)	speak (verb)
speak impudently to	express in speech
	exchange thoughts; talk with
	use language
	give a speech to
	make a characteristic or natural sound