crocodilian vs lacertine

crocodilian

adj
  • of, pertaining to, or resembling crocodiles 

noun
  • Any reptile of the order Crocodilia; a crocodile, alligator, caiman or gavial. 

lacertine

adj
  • Lizard-like; lacertian. 

noun
  • A lizard-like creature. 

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