glasshouse vs workhouse

glasshouse

noun
  • A military prison. 

  • A greenhouse, especially one for commercial use. 

  • A building where glass or glassware is manufactured. 

workhouse

noun
  • A prison in which the sentence includes manual labour. 

  • An institution for the poor homeless, funded by the local parish, where the able-bodied were required to work. 

verb
  • To place (a person) in the workhouse (institution for the poor). 

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