impact vs invade

impact

verb
  • To collide or strike, the act of impinging. 

  • To stamp or impress onto something. 

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

  • 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. 

invade

verb
  • To attack; to infringe; to encroach on; to violate. 

  • To move into. 

  • To enter by force in order to conquer. 

  • To infest or overrun. 

  • To make an unwelcome or uninvited visit or appearance, usually with an intent to cause trouble or some other unpleasant situation. 

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