fungus vs polyp

fungus

noun
  • Any member of the kingdom Fungi; a eukaryotic organism typically having chitin cell walls but no chlorophyll or plastids. Fungi may be unicellular or multicellular. 

polyp

noun
  • An abnormal growth protruding from a mucous membrane. 

  • A cylindrical coelenterate, such as the hydra, having a mouth surrounded with tentacles. 

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