obscene vs phallic

obscene

adj
  • Lewd or lustful. 

  • Offensive to standards of decency or morality. 

  • Disgusting or repulsive. 

  • Liable to corrupt or deprave. 

  • Beyond all reason; excessive. 

phallic

adj
  • Relating to, or characteristic of the penis. 

  • Shaped like an erect human penis. 

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