crest vs mons

crest

noun
  • The summit of a hill or mountain ridge. 

  • 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 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. 

mons

noun
  • A mountain or extinct volcano on a planet or a moon. 

  • The pubic mound or mons pubis. In human anatomy or in mammals in general, the mons pubis (Latin for "pubic mound"), also known as the mons veneris (Latin, mound of Venus) or simply the mons, is the adipose tissue lying above the pubic bone of adult females, anterior to the pubic symphysis. The mons pubis forms the anterior portion of the vulva. 

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