lessen vs originate

lessen

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

  • To become less. 

conj
  • unless. 

originate

verb
  • To cause (someone or something) to be; to bring (someone or something) into existence; to produce or initiate a person or thing. 

  • To come into existence; to have origin or beginning; to spring, be derived (from, with). 

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