penile vs smutty

penile

adj

  • Pertaining to the penis. 

smutty

adj

  • Obscene, indecent. 

  • Affected with the smut fungus. 

  • Soiled with smut; blackened, dirty. 

verb

  • To make dirty; to soil. 

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