crypt vs marble town

crypt

noun
  • Any of the genus Cryptopus of orchids of Madagascar and Mauritius. 

  • A small pit or cavity in the surface of an organ or other structure. 

  • Any of the genus Cryptocoryne of aquatic plants of southern and southeastern Asia. 

  • An underground vault, especially one beneath a church that is used as a burial place. 

marble town

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