vegetable vs waterleaf

vegetable

noun
  • The edible part of such a plant. 

  • A person whose brain (or, infrequently, body) has been damaged so that they cannot interact with the surrounding environment; a person in a persistent vegetative state. 

  • Any plant. 

  • A plant raised for some edible part of it, such as the leaves, roots, fruit or flowers, but excluding any plant considered to be a fruit, grain, herb, or spice in the culinary sense. 

adj
  • Of or relating to plants. 

  • Of or relating to vegetables. 

waterleaf

noun
  • A tropical plant (Talinum fruticosum), the leaves of which are eaten as a vegetable. 

  • Any plant of the genus Hydrophyllum. 

  • A leaf-shaped decoration used on the capitals of columns in late 12th-century Romanesque architecture 

  • An absorbent unsized paper like blotters as opposed to slake-sized or hard sized papers. 

  • Any plant of Hydrophyllaceae, the waterleaf family. 

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