badge vs lapel pin

badge

noun
  • A small nameplate, identifying the wearer, and often giving additional information. 

  • A police officer. 

  • Something characteristic; a mark; a token. 

  • A small overlay on an icon that shows additional information about that item, such as the number of new alerts or messages. 

  • A carved ornament on the stern of a vessel, containing a window or the representation of one. 

  • A distinctive mark, token, sign, emblem or cognizance, worn on one's clothing, as an insignia of some rank, or of the membership of an organization. 

  • A card, sometimes with a barcode or magnetic strip, granting access to a certain area. 

  • A distinctive mark worn by servants, retainers, and followers of royalty or nobility, who, being beneath the rank of gentlemen, have no right to armorial bearings. 

  • An icon or emblem awarded to a user for some achievement. 

verb
  • To show a badge to. 

  • To mark or distinguish with a badge. 

  • To enter a restricted area by showing one's badge. 

lapel pin

noun
  • A simple accessory that can be attached to clothing with a pin or fastener, often round and bearing a design, logo or message, and used for decoration, identification or to show political affiliation, etc. 

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