weaker sex vs womanhood

weaker sex

noun
  • Women; the female gender. 

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

womanhood

noun
  • The state or condition of being a woman. 

  • The female genitalia, especially the vulva. 

  • The idealized nature of a woman: all of the characteristics traditionally and ideally ascribed to womanliness regarded collectively. 

  • All of the women of a given place, area, or subgroup regarded collectively. 

  • The self-concept of a woman with respect to her possession of the various qualities traditionally and ideally ascribed to womanliness; a woman's sense or view of herself as being more or less womanly. 

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