margin vs middle

margin

noun
  • The edge or border of any flat surface. 

  • A permissible difference; allowing some freedom to move within limits. 

  • The yield or profit; the selling price minus the cost of production. 

  • margin of victory 

  • That which is ancillary; periphery. 

  • The edge defining inclusion in or exclusion from a set or group. 

  • The edge of the paper, typically left blank when printing but sometimes used for annotations etc. 

  • A difference or ratio between results, characteristics, scores. 

  • Collateral security deposited with a broker, to compensate the broker in the event of loss in the speculative buying and selling of stocks, commodities, etc. 

verb
  • To enter (notes etc.) into the margin. 

  • To trade (securities etc.) on margin (collateral). 

  • To add a margin to. 

middle

noun
  • A centre, midpoint. 

  • The part between the beginning and the end. 

  • The middle stump. 

  • The central part of a human body; the waist. 

  • The middle voice. 

adj
  • Pertaining to the middle voice. 

  • Located in the middle; in between. 

  • Central. 

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