gendersex vs grammatical gender

gendersex

noun
  • sex or gender. A division of organisms into masculine(man/male), feminine(woman/female) or others by sexual characteristics or social characteristics. 

grammatical gender

noun
  • The grammatically prescribed gender of a noun, which does not necessarily correspond with the referent’s attributes such as biological sex. 

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