crest vs seal

crest

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

  • 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. 

  • 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. 

  • 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. 

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. 

seal

noun
  • A design or insignia usually associated with an organization or an official role. 

  • An impression of such stamp on wax, paper or other material used for sealing. 

  • A bearing representing a creature something like a walrus. 

  • Anything that secures or authenticates. 

  • A tight closure, secure against leakage. 

  • Something which will be visibly damaged if a covering or container is opened, and which may or may not bear an official design. 

  • A chakra. 

  • Confirmation or approval, or an indication of this. 

  • A stamp used to impress a design on a soft substance such as wax. 

  • Something designed to prevent liquids or gases from leaking through a joint. 

  • A pinniped (Pinnipedia), particularly an earless seal (true seal) or eared seal. 

verb
  • To place a seal on (a document). 

  • To confirm or set apart as a second or additional wife. 

  • To guarantee. 

  • To fasten (something) so that it cannot be opened without visible damage. 

  • To close securely to prevent leakage. 

  • To place in a sealed container. 

  • To prevent people or vehicles from crossing (something). 

  • To tie up animals (especially cattle) in their stalls. 

  • To mark with a stamp, as an evidence of standard exactness, legal size, or merchantable quality. 

  • To form a sacred commitment. 

  • To hunt seals. 

  • To place a notation of one's next move in a sealed envelope to be opened after an adjournment. 

  • To fix, as a piece of iron in a wall, with cement or plaster, etc. 

  • To close by means of a seal. 

  • To fry (meat) at a high temperature to retain the juices. 

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