beak vs cere

beak and cere both are nouns.

Word	Noun	Adjective	Verb	Adverb
beak	Yes	No	Yes	No
cere	Yes	No	Yes	No

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

beak (noun)	cere (noun)
horny projecting mouth of a bird	the fleshy, waxy covering at the base of the upper beak of some birds
beaklike mouth of animals other than birds (e.g., turtles)
informal terms for the nose
a beaklike, tapering tip on certain plant structures

beak (verb)	cere (verb)
hit lightly with a picking motion	wrap up in a cerecloth