Oval
Part of speech: noun
Definition: A shape rather like an egg or an ellipse. A sporting arena etc. of this shape.
Part of speech: adjective
Definition: Having the shape of an oval.
Example sentence: Clinton is a big personality who has led a big life, and for some of the media conventional wisdom to boil it down to a view that 'all people are really interested in' are a few moments of madness in the Oval Office gets him, the importance of the presidency, and the significance of his life, all wrong.
Circle
Part of speech: verb
Definition: To travel around along a curved path.To surround.To place or mark a circle around.To travel in circles.
Part of speech: noun
Definition: A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from another point.A two-dimensional geometric figure, a disk, consisting of the set of all those points of a plane at a distance less than or equal to a fixed distance from another point.Any thin three-dimensional equivalent of the geometric figures.A curve that more or less forms part or all of a circle.Orbit.A specific group of persons.A line comprising two semicircles of 30 yards radius centred on the wickets joined by straight lines parallel to the pitch used to enforce field restrictions in a one-day match.