plucky vs unprepared

plucky

adj
  • Having or showing pluck, courage or spirit in trying circumstances. 

unprepared

adj
  • Not prepared; caught by surprise. 

noun
  • A black mark given to a pupil who arrives at a lesson without the necessary items or preparation. 

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