impact vs pretend

impact

verb
  • To significantly or strongly influence or affect; to have an impact on. 

  • To stamp or impress onto something. 

  • To collide or strike, the act of impinging. 

  • To compress; to compact; to press into something or pack together. 

noun
  • A significant or strong influence or effect. 

  • A forced impinging. 

  • The striking of one body against another; collision. 

  • The force or energy of a collision of two objects. 

pretend

verb
  • To feign, affect (a state, quality, etc.). 

  • To claim, to allege, especially when falsely or as a form of deliberate deception. 

  • To lay claim to (an ability, status, advantage, etc.). (originally used without to) 

  • To make oneself appear to do or be doing something; to engage in make-believe. 

noun
  • the act of engaging in pretend play. 

adj
  • Not really what it is represented as being; imaginary, feigned. 

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