anguinine vs colubrine

anguinine

adj

  • Of, pertaining to, or characteristic of serpents. 

colubrine

adj

  • Relating to snakes. 

  • Snakelike. 

noun

  • Any snake of the subfamily Colubrinae 

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