head trip vs substance

head trip

noun
  • An experience or set of experiences which is intellectually challenging or stimulating. 

  • An ego trip. 

  • A disorienting, exciting experience, especially one consisting mainly of striking sensory impressions. 

  • A state of mind in which one is distracted, disturbed, or unnerved, whether self-induced or resulting from ill-treatment by others. 

substance

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. 

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

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