ophidian vs python

ophidian

noun
  • Any species of the suborder Serpentes; a snake or serpent. 

adj
  • Of or pertaining to the suborder Serpentes; of, related to, or characteristic of a snake or serpent. 

python

noun
  • A type of large constricting snake. 

  • A penis. 

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