intention vs the object of the exercise

intention

verb
  • To intend. 

noun
  • The goal or purpose. 

  • A course of action that a person intends to follow. 

  • The process of the healing of a wound. 

  • A stretching or bending of the mind toward an object or a purpose (an intent); closeness of application; fixedness of attention; earnestness. 

the object of the exercise

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