cockroach vs roach

cockroach

noun
  • A black or brown straight-winged insect of the order Blattodea. 

  • A Tutsi. 

  • A person from New South Wales. 

  • A person or a member of a group of people regarded as undesirable and rapidly procreating. 

roach

noun
  • The California roach, of the monotypic genus Hesperoleucus 

  • The butt of a marijuana cigarette. 

  • The common roach (Rutilus rutilus) 

  • A marijuana cigarette, blunt, or joint. 

  • A kind of headdress worn by some of the indigenous peoples of North America. 

  • The filter of a rolled cigarette or joint, made from card or paper. 

  • A cockroach. 

  • Gritty or coarse rock; especially Portland stone or similar limestone. 

  • Species in the genus Rutilus, especially 

  • An extra curve of material added to the leech (aft edge) of a sail to increase the sail area. 

verb
  • To cut a person's hair so that it stands straight up. 

  • To cut or shave off the mane of a horse so that the remaining hair stands up on the neck. 

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