cantaloupe vs grapefruit

cantaloupe

noun
  • An orange colour, like that of cantaloupe flesh. 

  • Having a rough skin resembling netting; also known as muskmelon or rockmelon. 

  • Smooth-skinned, also known as true cantaloupe, found in the Middle East and also grown in Europe. 

grapefruit

noun
  • The tree of the species Citrus paradisi, a hybrid of pomelo (Citrus maxima) and sweet orange. 

  • The large spherical tart fruit produced by this tree. 

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