shu-shu vs tittle-tattle

shu-shu

tittle-tattle

verb

  • To engage in such gossip. 

  • To spread gossip. 

noun

  • An idle, trifling talker; a gossip. 

  • petty, idle gossip. 

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