bottlenose dolphin vs bottlenose whale

bottlenose dolphin

noun
  • Tursiops truncatus, the common bottlenose dolphin, famous for its presence in aquarium shows. 

  • One of the species of gray dolphin in the genus Tursiops, between 2 and 4 meters in length inhabiting warm and temperate seas worldwide. 

bottlenose whale

noun
  • One of two species of whale in the Hyperoodon genus, both with characteristic bottle-shaped noses. 

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