lost soul vs slacker

lost soul

noun
  • One who is forlorn, who lacks direction, purpose, or motivation in life. 

  • A soul that is destined to go to hell; a person possessing such a soul. 

slacker

noun
  • A person lacking a sense of direction in life; an underachiever. 

  • A user of the Slackware Linux distribution. 

  • A member of a certain 1990s subculture associated with Generation X. 

  • One who procrastinates or is lazy. 

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