ellipsoid of revolution vs globular

ellipsoid of revolution

noun
  • A spheroid; a solid of revolution generated by rotating an ellipse about one of its axes. 

globular

noun
  • A globular cluster 

adj
  • Comprising globules. 

  • Roughly spherical in shape; globe-shaped. 

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