approximate vs incentive

approximate

adj
  • Approaching; proximate; nearly resembling. 

  • Nearing correctness; nearly exact; not perfectly accurate. 

verb
  • To come near to; to approach. 

  • To carry or advance near; to cause to approach. 

  • To estimate. 

incentive

adj
  • Inciting; encouraging or moving; rousing to action; stimulating. 

  • Serving to kindle or set on fire. 

noun
  • Something that motivates, rouses, or encourages. 

  • A bonus or reward, often monetary, to work harder. 

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