incentive vs passport

incentive

noun
  • Something that motivates, rouses, or encourages. 

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

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

  • Serving to kindle or set on fire. 

passport

noun
  • Something which enables someone to do or achieve something. 

  • An official document normally used for international journeys, which proves the identity and nationality of the person for whom it was issued. 

  • Any document that allows entry or passage. 

verb
  • To enable eligibility for a benefit automatically based on eligibility for a different benefit. 

  • Providing the legal requirements to enable or legitimize cross-border economic activity. 

  • To regulate how money given to a local authority must be spent. 

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