greenery vs leaf vegetable

greenery

noun
  • Green foliage or verdure. 

  • Foliage used as decoration. 

  • Marijuana. 

leaf vegetable

noun
  • The leaf of a plant used as an edible vegetable, such as lettuce, spinach, or rocket. 

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