dawdler vs slacker

dawdler

noun
  • A person who dawdles or idles. 

slacker

noun
  • One who procrastinates or is lazy. 

  • 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. 

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