anguine vs colubrine

anguine

adj

  • Snakelike. 

  • Pertaining to snakes or serpents 

colubrine

adj

  • Snakelike. 

  • Relating to snakes. 

noun

  • Any snake of the subfamily Colubrinae 

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