funeral home vs undertaker's

funeral home

noun
  • Business that provides interment and funeral services for the dead. 

  • A mortuary where the friends and relatives of the deceased may attend a wake, or pay their last respects. 

undertaker's

noun
  • The business establishment of an undertaker 

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