Wikipedia 2005 on Gender:
Gender, for the purposes of this article, is the perceived or projected (self-identified) masculinity or femininity of a person. A person's gender is complex, encompassing countless characteristics of appearance, speech, movement and other factors not solely limited to biological sex.
Societies tend to have binary gender systems in which everyone is categorized as male or female, but this is not universal. Some societies include a third gender role; for instance, the Native American Two-Spirit people and the hijras of India.
There is debate over to what extent gender is a social construct and to what extent it is a biological construct. At the extremes of these views you have constructionism which suggests that it is entirely a social construct and essentialism which suggests that it's entirely a biological construct.
Gender associations are constantly changing as society progresses. For example, the color pink was considered masculine in the early 1900s and is now seen as feminine.
Wikipedia 2021 on Gender:
None of this would have happened if prudes hadn’t started using the word ‘gender’ when they meant ‘sex’ when describing people.
Personally, Inever even use the word gender except when being facetious. I use ‘sex’ in it’s rapidly-becoming-archaic sense.
Wikipedia has no standing.
Seriously ... it's a complete farce.