glasshouse vs orangery

glasshouse

noun
  • A greenhouse, especially one for commercial use. 

  • A building where glass or glassware is manufactured. 

  • A military prison. 

orangery

noun
  • A greenhouse in which orange trees are grown. 

  • A garden or plantation where orange trees are grown. 

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