detention centre vs workhouse

detention centre

noun
  • A facility in which people are detained (held in custody); a jail. 

  • An immigration detention facility; a facility in which people who have attempted to enter Australia without prior authorisation are detained, pending a decision on whether they are to be accepted as refugees or returned to their country of origin. 

  • A concentration camp. 

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 detention centre and workhouse occurred in a corpus of books? (source: Google Ngram Viewer )