crude vs retracted

crude

adj
  • Pertaining to the uninflected stem of a word. 

  • In a natural, untreated state. 

  • Characterized by simplicity, especially something not carefully or expertly made. 

  • Lacking tact or taste. 

  • Lacking concealing elements. 

noun
  • Any substance in its natural state. 

  • Crude oil. 

retracted

adj
  • Pronounced further back in the vocal tract. 

  • Withdrawn back and in, as the claws of a cat. 

  • Couped by a line diagonal to the main direction. 

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