feature vs quirk

feature

noun
  • The cast or structure of anything, or of any part of a thing, as of a landscape, a picture, a treaty, or an essay; any marked peculiarity or characteristic. 

  • An individual measurable property or characteristic of a phenomenon being observed; the input of a model. 

  • A beneficial capability of a piece of software. 

  • Any of the physical constituents of the face (eyes, nose, etc.). 

  • The act of being featured in a piece of music. 

  • Characteristic forms or shapes of parts. For example, a hole, boss, slot, cut, chamfer, or fillet. 

  • A long, prominent article or item in the media, or the department that creates them; frequently used technically to distinguish content from news. 

  • Something discerned from physical evidence that helps define, identify, characterize, and interpret an archeological site. 

  • An important or main item. 

  • The elements into which linguistic units can be broken down. 

verb
  • To appear, to make an appearance. 

  • To ascribe the greatest importance to something within a certain context. 

  • To star, to contain. 

quirk

noun
  • An idiosyncrasy; a slight glitch, mannerism; something unusual about the manner or style of something or someone. 

  • An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit. 

verb
  • To (cause to) move with a wry jerk. 

  • To furnish with a quirk or channel. 

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