neb vs pecker

neb and pecker both are nouns.

Word	Noun	Adjective	Verb	Adverb
neb	Yes	No	No	No
pecker	Yes	No	No	No

As nouns, neb and pecker are synonyms defined as:

Other synonyms of neb include beak, bill, nib.

neb (noun)	pecker (noun)
horny projecting mouth of a bird	bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects
a long projecting or anterior elongation of an animal's head; especially the nose	horny projecting mouth of a bird
	obscene terms for penis