discoidal vs globoid

discoidal

adj
  • Having the flat, circular shape of a disc or a quoit 

globoid

adj
  • Of, or pertaining to, a globe 

noun
  • A spherical representation or projection of a sphere or ellipsoid. 

  • Mathematical connotation of globe. 

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