care home vs rest home

care home

noun
  • A place of residence for people who have significant deficiencies with activities of daily living, such as the elderly, but who do not need constant nursing care. 

rest 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. 

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