Halo vs diamond

Halo

noun
  • A member of the Angels Major League Baseball team. 

diamond

noun
  • The entire field of play used in the game. 

  • The polyiamond made up of two triangles. 

  • A card of the diamonds suit. 

  • A gemstone made from this mineral. 

  • Something that resembles a diamond. 

  • A rhombus, especially when oriented so that its longer axis is vertical. 

  • A ring containing a diamond. 

  • A very pale blue color. 

  • The infield of a baseball field. 

  • A glimmering glass-like mineral that is an allotrope of carbon in which each atom is surrounded by four others in the form of a tetrahedron. 

verb
  • to adorn with or as if with diamonds 

adj
  • First-rate; excellent. 

  • of, relating to, or being a sixtieth anniversary. 

  • of, relating to, or being a seventy-fifth anniversary. 

  • made of, or containing diamond, a diamond or diamonds. 

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