foggy vs shadowy

foggy

adj
  • Obscured by mist or fog; unclear; hazy 

  • Being, covered with, or pertaining to fog (“tall grass etc that grows after, or is left after, cutting; moss”) 

  • Confused, befuddled, etc. 

shadowy

adj
  • In shadow; darkened by shadows. 

  • Dark, obscure. 

  • Vague, dim, unclear, faint of an image. 

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