orbiculate vs spheric

orbiculate

adj
  • spherical or circular; orbicular 

noun
  • That which is orbiculate, especially a solid whose vertical section is oval and whose horizontal section is circular. 

spheric

adj
  • Spherical. 

  • Of or relating to the heavenly orbs, or to the sphere or spheres in which, according to ancient astronomy and astrology, they were set. 

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