buteo vs buzzard

Any of the broad-winged soaring raptors of the genus Buteo. 

Any of several Old World birds of prey of the genus Buteo with broad wings and a broad tail. 

In North America, a curmudgeonly or cantankerous man; an old person; a mean, greedy person. 

Any scavenging bird, such as the American black vulture (Coragyps atratus) or the turkey vulture (Cathartes aura). 

Synonym of double bogey