quaggy vs slumpy

quaggy

adj
  • Resembling a quagmire; marshy, miry. 

  • Soft or flabby (of a person etc.). 

slumpy

adj
  • Easily broken through; boggy; marshy. 

  • Slumping or sagging, or tending to slump or sag. 

  • Characteristic of an economic slump. 

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