push-up vs struggle

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. 

struggle

verb
  • To strive, or to make efforts, with a twisting, or with contortions of the body. 

  • To strive, to labour in difficulty, to fight (for or against), to contend. 

noun
  • A contortion of the body in an attempt to escape or to perform a difficult task. 

  • Strife, contention, great effort. 

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