invite vs unnoble

invite

verb
  • To allure; to draw to; to tempt to come; to induce by pleasure or hope; to attract. 

  • To ask for the presence or participation of someone or something. 

  • To encourage. 

  • To request formally. 

noun
  • An invitation. 

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 invite and unnoble occurred in a corpus of books? (source: Google Ngram Viewer )