histrionics vs improvisation

histrionics

noun
  • Exaggerated, overemotional behaviour, especially when calculated to elicit a response; melodramatics. 

improvisation

noun
  • The act of improvising, acting or going about something without planning ahead 

  • The act or art of composing and making music, poetry, and the like, extemporaneously 

  • That which is improvised; an impromptu. 

  • Musical technique, characteristic of blues music. 

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