buffalo vs crab louse

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. 

crab louse

noun
  • A parasitic insect, Pthirus pubis, that lives amongst the pubic hairs of humans and feeds on blood. 

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