paludous vs swampy

paludous

adj
  • Synonym of paludal (“marshy”) 

swampy

adj
  • Soggy and marshy; wet like a swamp. 

  • Flowing smoothly with no harsh tones but possibly including muddy tones. 

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