lollygagger vs sluggard

lollygagger

noun
  • A lazy person, one who lollygags; a slacker, ne'er-do-well. 

sluggard

noun
  • A person who is lazy, stupid, or idle by habit. 

  • A person slow to begin necessary work, a slothful person. 

  • A fearful or cowardly person, a poltroon. 

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