mince words vs palter

mince words

verb
  • To restrain oneself in a conversation by withholding some comments or using euphemisms. 

palter

verb
  • To talk insincerely; to prevaricate or equivocate in speech or actions. 

  • To babble; to chatter. 

  • To haggle. 

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