substance vs vagary

substance

verb
  • To give substance to; to make real or substantial. 

noun
  • Physical matter; material. 

  • Material possessions; estate; property; resources. 

  • Hypostasis. 

  • Drugs (illegal narcotics) 

  • Substantiality; solidity; firmness. 

  • The essential part of anything; the most vital part. 

  • A form of matter that has constant chemical composition and characteristic properties. 

vagary

noun
  • Something vague. 

  • An impulsive or illogical desire; a caprice or whim. 

  • An erratic, unpredictable occurrence or action. 

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