quotative vs tag line

quotative

noun
  • A grammatical device to mark quoted speech, such as be like in "he was like, 'who are you?'". 

  • A form of the complementizer related to the verb say, found in many languages of West Africa and South Asia. 

adj
  • Serving to mark quoted speech. 

tag line

noun
  • Synonym of dialogue tag 

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