expiry vs outgang

expiry

noun
  • End; termination; expiration. 

  • Synonym of expiration date 

  • Death. 

outgang

noun
  • An exit or egress. 

  • An outgate; a cattle-gate. 

  • The act of giving up occupancy of property. 

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