mongrel vs pedigree

mongrel

noun
  • A thuggish, obnoxious, or contemptible person; (often preceded by "poor") a pitiable person. 

  • Someone or something of mixed kind or uncertain origin, especially a dog. 

  • An erect penis; an erection. 

adj
  • Of mixed breed, nature, or origin; of or like a mongrel. 

pedigree

adj
  • Having a pedigree. 

  • Purebred. 

verb
  • To determine the pedigree of (an animal). 

noun
  • A person's ancestral history; ancestry, lineage. 

  • A chart, list, or record of ancestors, to show breeding, especially distinguished breeding. 

  • The history or provenance of an idea, custom etc. 

  • The ancestry of a domesticated animal, especially a dog or horse. 

  • Good breeding or ancestry. 

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