battler vs survivor

battler

noun
  • One who works hard in the face of adversity. 

  • One who wages battle against an enemy; a soldier; a general. 

survivor

noun
  • A person who is able to endure hardship. 

  • One who knew a specific decedent. 

  • One who survives, especially one who survives a traumatic experience. 

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