oval vs revolving

oval

noun
  • An elongated round shape resembling an egg or ellipse. 

  • A thing having such a shape, such as an arena. 

  • In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point. 

  • A sports field, typically but not exclusively oval in shape. 

adj
  • Of or pertaining to an ovum. 

  • Having the shape of an oval. 

revolving

noun
  • The act of something that revolves or turns. 

adj
  • moving around a central point. 

  • Relating to an account or line of credit where balances and credit roll over from one billing cycle to the next, such as a credit card. 

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