eccentricity vs whimsy

eccentricity

noun
  • The quality of being eccentric or odd; any eccentric behaviour. 

  • The ratio, constant for any particular conic section, of the distance of a point from the focus to its distance from the directrix. 

  • The eccentricity of the conic section (usually an ellipse) defined by the orbit of a given object around a reference object (such as that of a planet around the sun). 

whimsy

noun
  • A quaint and fanciful idea; a whim; playfully odd behaviour. 

  • An impulsive, illogical or capricious character. 

  • A jigsaw puzzle piece that has been cut into a recognizable shape, as if on a whim; often the shape is representative of the theme of the image used for the puzzle. 

  • A whim (capstan or vertical drum). 

verb
  • To fill with whimsies or whims; to make fantastic; to craze. 

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