dichotomy vs half-moon

dichotomy

noun
  • A phase of the moon when it appears half lit and half dark, as at the quadratures. 

  • The division of a genus into two species; a division into two subordinate parts. 

  • A separation or division into two; a distinction that results in such a division. 

  • Such a division involving apparently incompatible or opposite principles; a duality. 

  • The division of a class into two disjoint subclasses that are together comprehensive, as the division of man into white and not white. 

  • Division and subdivision; bifurcation, as of a stem of a plant or a vein of the body into two parts as it proceeds from its origin; often successive. 

half-moon

noun
  • The moon in its first or last quarter when only half the visible face is illuminated; a quarter moon. 

  • A semicircular or crescent-shaped Filipino butter cookie. 

  • Anything shaped like a crescent, especially the base of a fingernail. 

  • Synonym of black and white (“type of cookie”) 

How often have the words dichotomy and half-moon occurred in a corpus of books? (source: Google Ngram Viewer )