cajoler vs sweet talker

cajoler

noun
  • A person who cajoles; a flatterer. 

  • A speech act intended to persuade or convince, such as the utterance "you know". 

sweet talker

noun
  • Someone who uses insincere flattery; a flatterer. 

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