goody-goody vs pious

goody-goody

adj
  • Mawkishly good; weakly benevolent or pious. 

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

pious

adj
  • Of or pertaining to piety, exhibiting piety, devout, godfearing. 

  • Relating to religion or religious works. 

  • Insisting on or making a show of one's own virtue, especially in comparison to others; sanctimonious, condescending, judgmental. 

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