aviary vs parrock

aviary

noun
  • A house, enclosure, large cage, or other place for keeping birds confined; a birdhouse. 

parrock

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

verb
  • To enclose or shut in; park. 

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