arch vs half-moon

arch

noun
  • An inverted U shape. 

  • An architectural element having the shape of an arch 

  • Any place covered by an arch; an archway. 

  • Curved part of the bottom of a foot. 

  • A natural arch-shaped opening in a rock mass. 

  • An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward. 

adj
  • principal; primary 

  • knowing, clever, mischievous 

verb
  • To form into an arch shape. 

  • To cover with an arch or arches. 

half-moon

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

  • A semicircular or crescent-shaped Filipino butter cookie. 

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

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

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