empty space vs glade

empty space

noun
  • An unoccupied space where something may be stored 

  • Vacuum; a space containing nothing at all 

  • A feeling of longing for someone or something that is gone; a sense of a thing's absence. 

  • An unoccupied area or volume. 

glade

noun
  • An open passage through a wood; a grassy open or cleared space in a forest. 

  • An everglade. 

  • An open space in the ice on a river or lake. 

  • A bright surface of ice or snow. 

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