betray vs grass

betray

verb
  • To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly. 

  • To violate the confidence of, by disclosing a secret, or that which one is bound in honor not to make known. 

  • To prove faithless or treacherous to, as to a trust or one who trusts; to be false to; to deceive. 

  • To disclose or indicate, for example something which prudence would conceal; to reveal unintentionally. 

  • To mislead; to expose to inconvenience not foreseen; to lead into error or sin. 

  • To lead astray; to seduce (as under promise of marriage) and then abandon. 

grass

verb
  • To act as a grass or informer, to betray; to report on (criminals etc) to the authorities. 

  • To bring to the grass or ground; to land. 

  • To feed with grass. 

  • To lay out on the grass; to knock down (an opponent etc.). 

  • To cover with grass or with turf. 

  • To expose, as flax, on the grass for bleaching, etc. 

noun
  • Asparagus; "sparrowgrass". 

  • Marijuana. 

  • Sharp, closely spaced discontinuities in the trace of a cathode-ray tube, produced by random interference. 

  • The season of fresh grass; spring or summer. 

  • An informer, police informer; one who betrays a group (of criminals, etc) to the authorities. 

  • The surface of a mine. 

  • A lawn. 

  • Various plants not in family Poaceae that resemble grasses. 

  • Noise on an A-scope or similar type of radar display. 

  • Any plant of the family Poaceae, characterized by leaves that arise from nodes in the stem and leaf bases that wrap around the stem, especially those grown as ground cover rather than for grain. 

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