badge vs crest

badge

noun
  • 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. 

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

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

  • 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. 

crest

noun
  • A bearing worn, not upon the shield, but usually on a helmet above it, sometimes (as for clerics) separately above the shield or separately as a mark for plate, in letterheads, and the like. 

  • The plume of feathers, or other decoration, worn on or displayed on a helmet; the distinctive ornament of a helmet. 

  • The upper curve of a horse's neck. 

  • The ridge or top of a wave. 

  • A tuft, or other natural ornament, growing on an animal's head, for example the comb of a cockerel, the swelling on the head of a snake, the lengthened feathers of the crown or nape of bird, etc. 

  • The ornamental finishing which surmounts the ridge of a roof, canopy, etc. 

  • The top line of a slope or embankment. 

  • A ridge along the surface of a bone. 

  • A design or logo, especially one of an institution, sports club, association or high-class family. 

  • Any of several birds in the family Regulidae, including the goldcrests and firecrests. 

  • The summit of a hill or mountain ridge. 

  • The helm or head, as typical of a high spirit; pride; courage. 

verb
  • Particularly with reference to waves, to reach a peak. 

  • To mark with lines or streaks like waving plumes. 

  • To reach the crest of (a hill or mountain) 

  • To furnish with, or surmount as, a crest; to serve as a crest for. 

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