reptilian vs reptiliform

reptilian

adj
  • Reptilelike. 

  • Unthinking, low, base, contemptible. 

  • Of or relating to the members of the class Reptilia. 

  • Cold-blooded, treacherous, unavoidably selfish and hostile. 

noun
  • A reptilian person, especially (ethnic slur) a Jew. 

  • A reptilian animal: a reptile. 

  • A reptilian alien, especially (ufology, often capitalized) of a shapeshifting race purported to secretly control the world. 

reptiliform

adj
  • Resembling or relating to reptiles. 

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