shan vs shitty

shan

adj
  • poor, low-quality 

  • unfair, harsh 

shitty

adj
  • Of low quality or standard; inferior; not up to par, or failing one's expectations 

  • Annoyed. 

  • Covered in faeces/feces; feculent. 

  • Under the influence of illicit drugs or alcohol; drunk; high. 

  • Very bad; unpleasant; miserable; insignificant. 

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