autoeroticism vs frigging

autoeroticism

noun

  • The practise of stimulating oneself sexually, masturbation 

frigging

noun

  • female masturbation 

adj

  • A minced oath of "fucking" as an intensifier. 

adv

  • Fucking, as intensifier. 

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