impact vs redound

impact

verb
  • To stamp or impress onto something. 

  • To collide or strike, the act of impinging. 

  • 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. 

redound

verb
  • To reflect (honour, shame etc.) to or onto someone. 

  • To reverberate, to echo. 

  • To attach, come back, accrue to someone; to reflect back on or upon someone (of honour, shame etc.). 

  • To roll back; to be sent or driven back. 

  • To arise from or out of something. 

  • To contribute to an advantage or disadvantage for someone or something. 

  • To contribute to the honour, shame etc. of a person or organisation. 

noun
  • A coming back, as an effect or consequence; a return. 

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