continuative vs durable

continuative

noun
  • a durative. 

  • Something that causes a continuation. 

adj
  • durative. 

  • Of or pertaining to continuation. 

durable

noun
  • A durable thing, one useful over more than one period, especially a year. 

adj
  • Able to resist wear or decay; lasting; enduring. 

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