circular vs oval

circular

adj
  • In the shape of, or moving in a circle. 

  • Referring back to itself, so as to prevent computation or comprehension; infinitely recursive. 

  • Circuitous or roundabout. 

  • Of or relating to a circle. 

  • Distributed to a large number of persons. 

verb
  • To extend in a circular direction. 

  • To distribute circulars to or at. 

noun
  • Synonym of flyer: a printed advertisement, directive, or notice intended for mass circulation. 

  • A shuttle bus with a circular route. 

oval

adj
  • Having the shape of an oval. 

  • Of or pertaining to an ovum. 

noun
  • 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. 

  • An elongated round shape resembling an egg or ellipse. 

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

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