bring about vs unnoble

bring about

verb
  • To accomplish, achieve. 

  • To cause to take place. 

unnoble

verb
  • To make (someone or something) no longer noble 

adj
  • Not noble; ignoble; base. 

  • Of a metal, being at the lower end of the electrochemical series, i.e. oxidising readily. 

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