nursing home vs old people's home

nursing home

noun
  • A place of residence for people who require constant nursing care and have significant deficiencies with activities of daily living, such as the elderly and younger adults with physical disabilities. 

old people's home

noun
  • nursing home 

  • retirement village 

How often have the words nursing home and old people's home occurred in a corpus of books? (source: Google Ngram Viewer )