hereafter vs immortalship

hereafter

noun
  • Existence after death. 

  • A future existence or state. 

adv
  • Sequentially after this point (in time, in the writing constituting a document, in the movement along a path, etc.) 

  • From now on. 

immortalship

noun
  • immortality 

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