cajoler vs spear carrier

cajoler

noun
  • A person who cajoles; a flatterer. 

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

spear carrier

noun
  • A person in a play or movie with a minimal part; an extra. 

  • One who plays a leading or substantial role as a supporter, proponent, etc. representing a group, cause, or point of view. 

  • One who serves in a subordinate or menial role. 

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