jumbo vs sperm whale

jumbo

noun
  • An elephant. 

  • An especially large or powerful person, animal, or thing. 

  • A platform-mounted machine for drilling rock. 

adj
  • Especially large or powerful. 

sperm whale

noun
  • A whale (Physeter catodon, syn. Physeter macrocephalus), the largest of the toothed whales. 

  • Any whale in the superfamily Physeteroidea, which also includes the small whales of genus Kogia. 

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