parrock vs stockade

parrock

noun
  • An enclosure; a park; a croft, or small field; a paddock. 

verb
  • To enclose or shut in; park. 

stockade

noun
  • an enclosure protected by a wall of wooden posts 

  • a military prison 

verb
  • To enclose in a stockade. 

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