stimulating vs tiring

stimulating

adj
  • Having a manner that stimulates. 

tiring

adj
  • That tires or tire. 

noun
  • Bits of bone and tough organic material from a corpse given to hawks to abate their hunger. 

  • The action of tiring. 

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