rounded vs spheroidal

rounded

adj
  • Made into a circle or sphere. 

  • Complete or balanced. 

  • Pronounced with the lips drawn together. 

  • Ending in a broad arch. 

  • Describing a number that has been changed to its nearest desired value. 

spheroidal

adj
  • Like a spheroid; roughly spherical. 

noun
  • A spheroid 

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