metaphorical vs parabolic

metaphorical

adj
  • Pertaining to or characterized by a metaphor; figurative; symbolic. 

parabolic

adj
  • Of or pertaining to a parable. 

  • Of, or pertaining to, or in the shape of a parabola or paraboloid. 

noun
  • A parabolic function, equation etc. 

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