Sex

‘Assigned to a person on the basis of primary sex characteristics (genitalia) and reproductive functions. Sometimes the terms ‘sex’ and ‘gender’ are interchanged to mean ‘male’ or ‘female’.’ Stonewall 

‘A socially constructed classification system based on a person’s sex characteristics. Sex is a spectrum that includes a variety of sexes much larger than just male or female, based on biological differences.’ UMASS