glade vs quagmire

glade

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

  • An everglade. 

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

  • A bright surface of ice or snow. 

quagmire

noun
  • A swampy, soggy area of ground. 

  • A perilous, mixed up and troubled situation; a hopeless tangle. 

verb
  • To embroil (a person, etc.) in complexity or difficulty. 

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