goody-goody vs niminy-piminy

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. 

niminy-piminy

adj
  • overtly or excessively prim 

noun
  • affected delicacy; mincingness 

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