pecker vs woodpecker

pecker and woodpecker both are nouns.

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

As nouns, pecker and woodpecker are synonyms defined as:

pecker and woodpecker: bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects

Other synonyms of pecker include peckerwood.

pecker (noun)	woodpecker (noun)
bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects	bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects
horny projecting mouth of a bird
obscene terms for penis