indefectible vs sensational

indefectible

adj
  • Not defectible. 

sensational

adj
  • Provoking a reaction of interest or excitement. 

  • Of or pertaining to sensation. 

  • Piquing or arousing the senses. 

  • Exceptionally great. 

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