weaker sex vs womxn

weaker sex

noun
  • Women; the female gender. 

  • Used other than figuratively or idiomatically: see weaker, sex. 

womxn

noun
  • Feminist spelling of woman. 

  • Feminist spelling of women. 

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