affect vs impress

affect

verb
  • To influence or alter. 

  • To make a show of; to put on a pretense of; to feign; to assume. To make a false display of. 

  • To feel affection for (someone); to like, be fond of. 

  • To burden (property) with a fixed charge or payment, or other condition or restriction. 

  • To move to emotion. 

  • Of an illness or condition, to infect or harm (a part of the body). 

noun
  • A subjective feeling experienced in response to a thought or other stimulus; mood, emotion, especially as demonstrated in external physical signs. 

impress

verb
  • To affect (someone) strongly and often favourably. 

  • To mark or stamp (something) using pressure. 

  • To fix deeply in the mind; to present forcibly to the attention, etc.; to imprint; to inculcate. 

  • To seize or confiscate (property) by force. 

  • To make an impression, to be impressive. 

  • To produce a vivid impression of (something). 

  • To produce (a mark, stamp, image, etc.); to imprint (a mark or figure upon something). 

  • To compel (someone) to serve in a military force. 

noun
  • An impression; an impressed image or copy of something. 

  • The act of impressing. 

  • Characteristic; mark of distinction; stamp. 

  • The act of impressing, or taking by force for the public service; compulsion to serve; also, that which is impressed. 

  • An impression on the mind, imagination etc. 

  • A heraldic device; an impresa. 

  • A stamp or seal used to make an impression. 

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