incentive vs mobile

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. 

mobile

adj
  • Capable of being moved, aroused, or excited; capable of spontaneous movement. 

  • Pertaining to or by agency of mobile phones. 

  • Characterized by an extreme degree of fluidity; moving or flowing with great freedom. 

  • Capable of being moved, especially on wheels. 

  • Easily moved in feeling, purpose, or direction; excitable; changeable; fickle. 

  • Changing in appearance and expression under the influence of the mind. 

noun
  • The internet accessed via mobile devices. 

  • One who or moves, or who can move (e.g. to travel to a different place). 

  • A kinetic sculpture or decorative arrangement made of items hanging so that they can move independently from each other. 

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