inspiration vs motivation

inspiration

noun
  • The act of an elevating or stimulating influence upon the intellect, emotions or creativity. 

  • A new idea, especially one which arises suddenly and is clever or creative. 

  • A person, object, or situation which quickens or stimulates an influence upon the intellect, emotions or creativity. 

  • The drawing of air into the lungs, accomplished in mammals by elevation of the chest walls and flattening of the diaphragm, as part of the act of respiration. 

  • A supernatural divine influence on the prophets, apostles, or sacred writers, by which they were qualified to communicate moral or religious truth with authority; a supernatural influence which qualifies people to receive and communicate divine truth; also, the truth communicated. 

  • A breath, a single inhalation. 

motivation

noun
  • The action of motivating. 

  • Something which motivates. 

  • A research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something. 

  • Willingness of action especially in behavior. 

  • An incentive or reason for doing something. 

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