impress vs signing

impress

noun
  • Characteristic; mark of distinction; stamp. 

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

  • The act of impressing. 

  • 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. 

verb
  • 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 affect (someone) strongly and often favourably. 

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

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

signing

noun
  • The use of sign language; skill at using a sign language. 

  • The act of concluding a contract, especially by an athlete or entertainer with a company. 

  • A player signed by a sporting organization. 

  • An event (signing session) in a bookshop etc. where an author signs copies of his or her book. 

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