smudged vs unclean

smudged

adj
  • Blurred as by being rubbed. 

unclean

adj
  • Dirty, soiled or foul. 

  • Ritually or ceremonially impure or unfit. 

  • Not moral or chaste. 

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