globular vs rotund

globular

adj
  • Roughly spherical in shape; globe-shaped. 

  • Comprising globules. 

noun
  • A globular cluster 

rotund

adj
  • Having a round, spherical or curved shape; circular; orbicular. 

  • Having a round body shape; portly or plump; podgy. 

  • Full and rich; orotund; sonorous; full-toned. 

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