herbage vs shrubbery

herbage

noun
  • Herbs collectively. 

  • Herbaceous plant growth, especially grass. 

  • The fleshy, often edible, parts of plants. 

  • The natural pasture of a land, considered as distinct from the land itself; hence, right of pasture (on another man's land). 

shrubbery

noun
  • Shrubs collectively. 

  • A planting of shrubs; a wide border to a garden where shrubs are thickly planted; or a similar larger area with a path winding through it. 

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