pumpkin vs yellow light

pumpkin

noun
  • A term of endearment for someone small and cute. 

  • 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. 

  • The round yellow or orange fruit of this plant. 

yellow light

noun
  • Used other than figuratively or idiomatically: see yellow, light. 

  • A traffic light, between the green light and the red light, indicating that vehicles should stop if safely possible. 

  • Hesitance to proceed; limited approval or permission to proceed. 

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