claver vs whistle Dixie

claver

verb

  • To gossip or chit-chat. 

noun

  • Frivolous or nonsensical talk; prattle; chatter. 

whistle Dixie

verb

  • To engage in idle conversational fantasies. 

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