entreat vs obsecrate

entreat

verb
  • To beseech or supplicate (a person); to prevail upon by prayer or solicitation; to try to persuade. 

  • To treat with, or in respect to, a thing desired; hence, to ask for earnestly. 

noun
  • An entreaty. 

obsecrate

verb
  • To beseech; to supplicate; to implore. 

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