plesiomorphic vs rude

plesiomorphic

adj
  • Sharing a character state with an ancestral clade; primitive. 

  • plesiomorphous 

rude

adj
  • Crudely made; primitive. 

  • Violent; abrupt; turbulent. 

  • Somewhat obscene, pornographic, offensive. 

  • Lacking in refinement or civility; bad-mannered; discourteous. 

  • Undeveloped, unskilled, inelegant. 

  • Hearty, vigorous; found particularly in the phrase rude health. 

  • Lacking refinement or skill; untaught; ignorant; raw. 

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