goody-goody vs scamp

goody-goody

noun
  • A well-behaved person with no obvious human failings, with the possible exception of smugness and self-satisfaction. 

adj
  • Mawkishly good; weakly benevolent or pious. 

scamp

noun
  • A preliminary design sketch. 

  • A mischievous person, especially a playful, impish youngster. 

  • A rascal, swindler, or rogue; a ne'er-do-well. 

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