plod vs push-up

plod

verb
  • To walk or move slowly and heavily or laboriously (+ on, through, over). 

  • To toil; to drudge; especially, to study laboriously and patiently. 

  • To trudge over or through. 

noun
  • A slow or labored walk or other motion or activity. 

  • the police, police officers 

  • a police officer, especially a low-ranking one. 

push-up

verb
  • To perform a push-up, or to lift oneself off the ground in a push-up-like manner. 

adj
  • Supporting the breasts to increase their apparent size. 

  • Designed to be worn rolled up. 

noun
  • An exercise done to improve upper body strength, performed by resting on one's toes and hands and pushing one's weight off the floor. 

  • A push-up bra. 

How often have the words plod and push-up occurred in a corpus of books? (source: Google Ngram Viewer )