foreverhood vs survival

foreverhood

noun
  • The state or condition of existing or lasting forever 

survival

noun
  • The fact or act of surviving; continued existence or life. 

  • The avoidance of relegation or demotion to a lower league or division. 

  • A custom or belief that persists in folklore from earlier times, when the rationale behind it is forgotten. 

  • Of, relating to or aiding survival. 

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