cucumber vs pumpkin

cucumber

noun
  • The edible fruit of this plant, having a green rind and crisp white flesh. 

  • A vine in the gourd family, Cucumis sativus. 

  • A person who is calm and self-possessed. 

pumpkin

noun
  • The round yellow or orange fruit of this plant. 

  • The color of the fruit of the pumpkin plant. 

  • Any of a number of cultivars from the genus Cucurbita; known in the US as winter squash. 

  • A domesticated plant, in species Cucurbita pepo, similar in growth pattern, foliage, flower, and fruit to the squash or melon. 

  • A term of endearment for someone small and cute. 

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