bird vs pecker

bird and pecker both are nouns.

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

bird (noun)	pecker (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings	bird with strong claws and a stiff tail adapted for climbing and a hard chisel-like bill for boring into wood for insects
badminton equipment consisting of a ball of cork or rubber with a crown of feathers	horny projecting mouth of a bird
a cry or noise made to express displeasure or contempt	obscene terms for penis
the flesh of a bird or fowl (wild or domestic) used as food
informal terms for a (young) woman

bird (verb)	pecker (verb)
watch and study birds in their natural habitat