furze vs shrub

furze

noun
  • A thorny evergreen shrub, with yellow flowers, Ulex gen. et spp., of which Ulex europaeus is particularly common upon the plains and hills of Great Britain and Ireland. 

shrub

noun
  • A woody plant smaller than a tree, and usually with several stems from the same base. 

  • A word mispronounced by replacing some consonant sounds with others of a similar place of articulation due to interference from one's knowledge of an indigenous Kenyan language. 

  • A liquor composed of vegetable acid, fruit juice (especially lemon), sugar, sometimes vinegar, and a small amount of spirit as a preservative. Modern shrub is usually non-alcoholic, but in earlier times it was often mixed with a substantial amount of spirit such as brandy or rum, thus making it a liqueur. 

verb
  • To mispronounce a word by replacing some consonant sounds with others of a similar place of articulation due to interference from one's knowledge of an indigenous Kenyan language. 

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