grampus vs spinner dolphin

grampus

noun

  • Risso's dolphin, Grampus griseus, with a blunt nose. 

  • The hellbender salamander, Cryptobranchus alleganiensis. 

  • The killer whale, Orcinus orca. 

  • giant whip scorpion (Mastigoproctus giganteus) 

spinner dolphin

noun

  • A species of small dolphin (Stenella longirostris). 

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