disestablish vs plank down

disestablish

verb
  • To deprive (an established church, military squadron, operations base, etc.) of its official status. 

  • To abolish (an existing position of employment). 

plank down

verb
  • To pay (an amount of money). 

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