moss vs quagmire

moss

noun
  • A bog; a fen. 

  • Any of various small, green, seedless plants growing on the ground or on the surfaces of trees, stones, etc.; now specifically, a plant of the phylum Bryophyta (formerly division Musci). 

  • A kind or species of such plants. 

  • Any alga, lichen, bryophyte, or other plant of seemingly simple structure. 

verb
  • To become covered with moss. 

  • To cover (something) with moss. 

quagmire

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

  • A swampy, soggy area of ground. 

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

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