brownie vs dunnock

brownie

noun
  • Any of various lycaenid butterflies of the Eurasian genus Miletus. 

  • A brown trout (Salmo trutta). 

  • A girl in the first level of Girl Guides (US: Girl Scouts). 

  • A small square piece of rich cake, usually made with chocolate. 

  • A household spirit or revered ancestor. 

  • The widow rockfish (Sebastes entomelas), a fish in the family Sebastidae. 

  • Coordinate term: greenie 

  • A person of Arab, Indian or Hispanic descent. Sometimes used for a Native American or Pacific Islander. 

  • A tall, long-necked beer bottle, made from brown coloured glass. 

  • A mythical creature, a helpful elf who would secretly do people's housework for them. 

dunnock

noun
  • A small European and Asian passerine bird, Prunella modularis; the hedge sparrow or hedge warbler. 

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