gym vs warm-up

gym

noun

  • A sports facility specialized for lifting weights and exercise. 

  • physical education class 

verb

  • To go to the gym. 

warm-up

noun

  • The act of exercising or stretching in preparation for strenuous activity 

  • Any act of preparation for a performance 

  • A period of time allocated for performing warm-ups. 

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