calisthenics vs trampoline

calisthenics

noun
  • A system of such exercises. 

  • Gymnastic exercises under the participation of a (surface-wise) multitude of muscles and often minimal equipment (thus, usually bodyweight exercises) with a stress on stamina. 

trampoline

noun
  • A competitive sport in which athletes are judged on routines of tricks performed on a trampoline. 

  • Any of a variety of looping or jumping instructions in specific programming languages. 

  • A gymnastic and recreational device consisting of a piece of taut, strong fabric or rubber stretched over a (usually steel) frame using many coiled springs as anchors. 

verb
  • To rewrite (computer code) to use trampoline instructions. 

  • To jump as if on a trampoline. 

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