Gender is the wide set of characteristics that are seen to distinguish between male and female entities, extending from one's biological sex to, in humans, one's social role or gender identity. As a word, it has more than one valid definition. In linguistics, it refers to characteristics of words. In ordinary speech, it is used interchangeably with sex to denote the condition of being male or female. In psychology many different perspectives seek to explain the differences between males and females. In societies they play distinctive roles and are treated and viewed differently. They ...