All the words related to the sex (sexuality, sexual, sex) have a common Latin base coming from sexualis and sexus which definite a separation sex in direction literal. This definite thus the sexué state which is characterized by anatomical, physical, and psychological differences.
The word sex seems to appear about the 12th century. It designates the woman about the 16th century At the 19th century the word sexuality appears and indicates the whole of the specific characteristics to each sex. It is only at the 20th century that the word sexuality takes to its direction modern and who definite all that with attraction with a sexual practice. A sexual practice is defined by all that approaches closely or by far with the genitals, in the pleasure of the body by the erotogenic zones.