aftercomer vs heir

aftercomer

noun
  • One coming after; a successor; (in the plural) posterity. 

heir

noun
  • A successor in a role, representing continuity with the predecessor. 

  • Someone who inherits, or is designated to inherit, the property of another. 

  • One who inherits, or has been designated to inherit, a hereditary title or office. 

verb
  • To inherit. 

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