clench vs push-up

clench

verb
  • To grip or hold fast. 

  • To close tightly. 

noun
  • A tight grip. 

  • A local chapter of the Church of the SubGenius parody religion. 

  • A seal that is applied to formed thin-wall bushings. 

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 clench and push-up occurred in a corpus of books? (source: Google Ngram Viewer )