downbear vs knock down

downbear

verb
  • To lessen; reduce. 

  • To bear or press down (on); press upon; depress; subdue. 

  • To bear, bring or carry down. 

knock down

verb
  • To reduce the price of. 

  • To drink fast. 

  • To disassemble for shipment. 

  • To hit or knock (something or someone), intentionally or accidentally, so that it falls. 

  • To demolish. 

  • To approve a drinking toast by banging glasses on the table. 

  • At an auction, to declare (something) sold with a blow from the gavel. 

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