attorn vs pass on

attorn

verb
  • To transfer one's obligations from a person to another person. 

  • To consent to the transfer of one's obligations as tenant under a lease to a new landlord. 

  • To acknowledge the jurisdiction of (a particular court) over one's dispute. 

pass on

verb
  • To transfer (something) to someone, especially by handing or bequeathing it to the next person in a series. 

  • To convey or communicate. 

  • To go forward. 

  • To die. 

  • To skip or decline. 

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