henceforwards vs hereafter

henceforwards

hereafter

noun
  • A future existence or state. 

  • Existence after death. 

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

  • From now on. 

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