cheetah vs worker

cheetah

noun
  • A distinctive member (Acinonyx jubatus) of the cat family, slightly smaller than the leopard, but with proportionately longer limbs and a smaller head; native to Africa and southeast Asia (where it is nearly extinct) and also credited with being the fastest terrestrial animal. 

worker

noun
  • A female ant, bee, termite or wasp. 

  • A nonreproductive social insect, such as ant, bee, termite, or wasp. 

  • A person who performs labor for a living, especially manual labor. 

  • A thread performing one instance of a particular task within a program. 

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