provocative vs unpromising

provocative

adj
  • Serving or tending to elicit a strong, often negative sentiment in another person; exasperating. 

  • Serving or tending to excite, stimulate or arouse sexual interest; sexy. 

unpromising

adj
  • Not promising 

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