"Post-structuralists appropriated terms such as "" and "difference" that originated in 1970s-era Black feminism. ... But there is a world of difference between social identity--identifying as part of a social group--and individual identity. The post-structural conception of "identity" is based on that of individuals, while "difference" likewise can refer to any characteristic that sets an individual apart from others, whether it is related to oppression or is simply non-normative."