globular vs spheric

globular

adj
  • Roughly spherical in shape; globe-shaped. 

  • Comprising globules. 

noun
  • A globular cluster 

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 globular and spheric occurred in a corpus of books? (source: Google Ngram Viewer )