p-word vs penis

p-word

noun
  • prosodic word, phonological word. 

  • A preposition or adverb that no longer performs a prepositional or adverbial function including particles in phrasal verbs, quasi-modal verbs, and determiner phrases and infinitive markers. 

  • Any taboo word starting with p, e.g. piss, penis, pussy, prick, pajeet, or Paki. 

penis

noun
  • The male reproductive organ used for sexual intercourse that in the human male and some other mammals is also used for urination; the tubular portion of the male genitalia (excluding the scrotum). 

How often have the words p-word and penis occurred in a corpus of books? (source: Google Ngram Viewer )