Dionysian vs mammalian

Dionysian

adj

  • Of or pertaining to Dionysus. 

noun

  • A follower of Dionysus. 

  • One who is dionysian. 

mammalian

adj

  • of, or pertaining to, mammals 

  • like a mammal 

noun

  • Any mammal. 

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