Difference between Redheaded Woodpecker and Redhead

REDHEADED WOODPECKER vs REDHEAD: NOUN

North American diving duck with a gray-and-black body and reddish-brown head
Someone who has red hair
Black-and-white North American woodpecker having a red head and neck
A person with red hair.
A North American duck (Aythya americana), the male of which has a gray back and wings, a red head, and a black breast.
A person having red hair.
A red-headed duck, the pochard, Fuligula or Æthyia ferina, a common bird of Europe, a variety of which bears the same name in America and is called more fully red-headed duck, red-headed raftduck, red-headed broadbill, also grayback, Washington canvasback, and American pochard.
The red-headed woodpecker, Melanerpes erythrocephalus. See cut under Melanerpes.
An American duck (Aythya Americana) highly esteemed as a game bird. It is closely allied to the canvasback, but is smaller and its head brighter red. Called also red-headed duck. American poachard, grayback, and fall duck. See Illust. under Poachard.
The red-headed woodpecker. See Woodpecker.
A kind of milkweed (Asclepias Curassavica) with red flowers. It is used in medicine.
Chinese red-headed centipede
Red-headed bunting
Red-headed titi
Red-headed vulture
Red-headed woodpecker Melanerpes erythrocephalus
A tropical milkweed, Asclepias Curassavica, with umbels of bright-red flowers.

Purple gallinule, Chipping sparrow, Indigo bunting, Roseate spoonbill, Northern parula, Brown creeper, Tufted puffin, Gray jay, Ovenbird, Pileated, Pine warbler, Belted kingfisher, Gray catbird, Melanerpes erythrocephalus, Redhead

Hottie, Blond, Brunette, Blonde, Red haired, Red, Reddish, Ginger, Vixen, Redheaded, Aythya americana, Carrottop, Melanerpes erythrocephalus, Redheader, Redheaded woodpecker

Winter wren, Purple gallinule, Chipping sparrow, Indigo bunting, Roseate spoonbill, Northern parula, Brown creeper, Tufted puffin, Gray jay, Ovenbird, Pileated, Pine warbler, Belted kingfisher, Gray catbird, Redhead

Chick, Cutie, Brunet, Babe, Hottie, Blond, Brunette, Blonde, Red haired, Red, Reddish, Ginger, Vixen, Redheaded, Redheaded woodpecker

Animals that inhabit barrens include whitetail deer, grouse, prairie chicken, redheaded woodpecker and timber wolf.