shrub vs vegetation

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. 

vegetation

noun
  • Plants, taken collectively. 

  • An abnormal verrucous or fibrinous growth 

  • There were large amounts of vegetation in the forest. 

  • The act or process of vegetating, or growing as a plant does; vegetable growth. 

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