transsex vs transsexuality

transsex

noun

  • Transsexuality, transsexualism; the state of being transsexual. (Compare transgender.) 

adj

  • Transsexual. 

verb

  • To transgender; to (cause something to) change from being sexed/gendered in one way to being sexed/gendered in another way. 

  • To transition (to undergo a transition) from being one sex/gender to being another (especially by sex reassignment surgery). (Compare transgender.) 

transsexuality

noun

  • The state, condition, or properties of being transsexual. 

  • The psychological diagnosis of gender identity disorder. 

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