buffalo vs bullhead

buffalo

noun
  • The buffalo fish (Ictiobus spp.). 

  • A related North American animal, the American bison, Bison bison. 

  • Any of the Old World mammals of the family Bovidae, such as the Cape buffalo, Syncerus caffer, or the water buffalo Bubalus bubalis. 

  • A nickel. 

verb
  • To outwit, confuse, deceive, or intimidate. 

  • To hunt buffalo. 

bullhead

noun
  • A bullhead shark (Heterodontus spp.). 

  • A bullhead rail. 

  • The yellow bullhead, Ameiurus natalis. 

  • The black bullhead, Ameiurus melas. 

  • A fish of species Gobiomorphus gobioides. 

  • An obstinate person. 

  • The European bullhead, Cottus gobio. 

  • The brown bullhead, Ameiurus nebulosus. 

  • Any of various sculpins of the suborder Scorpaenoidei 

  • A chronograph (watch or stopwatch) with two push buttons arranged like the horns of a bull on the top end of the case, typically with the crown between them. 

How often have the words buffalo and bullhead occurred in a corpus of books? (source: Google Ngram Viewer )