nib vs beak

nib and beak both are nouns.

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

As nouns, nib and beak are synonyms defined as:

Other synonyms of nib include bill, neb, pecker.

nib (noun)	beak (noun)
horny projecting mouth of a bird	horny projecting mouth of a bird
the writing point of a pen	beaklike mouth of animals other than birds (e.g., turtles)
	informal terms for the nose
	a beaklike, tapering tip on certain plant structures

nib (verb)	beak (verb)
	hit lightly with a picking motion