lessen vs produce

lessen

verb
  • To make less; to diminish; to reduce. 

  • To become less. 

conj
  • unless. 

produce

verb
  • To alter using technology, as opposed to simply performing. 

  • To extend an area, or lengthen a line. 

  • To bring forth, to yield, make, manufacture, or otherwise generate. 

  • To make (a thing) available to a person, an authority, etc.; to provide for inspection. 

  • To sponsor and present (a motion picture, etc) to an audience or to the public. 

noun
  • Harvested agricultural goods collectively, especially vegetables and fruit, but possibly including eggs, dairy products and meat; the saleable food products of farms. 

  • Livestock and pet food supplies. 

  • That which is produced. 

  • Offspring. 

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