crude vs off-color

crude

adj
  • Lacking tact or taste. 

  • In a natural, untreated state. 

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

  • Lacking concealing elements. 

  • Pertaining to the uninflected stem of a word. 

noun
  • Any substance in its natural state. 

  • Crude oil. 

off-color

adj
  • Feeling mildly unwell. 

  • Dirty, vulgar or obscene, especially in a way that is unpleasant. 

  • Different than usual. 

  • Of the wrong color. 

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