A gender role, also known as a sex role, is a social role encompassing a range of behaviors and attitudes that are generally considered acceptable, appropriate, or desirable for a person based on that person's sex. Gender roles are usually centered on conceptions of masculinity and femininity, although there are exceptions and variations. The specifics regarding these gendered expectations may vary among cultures, while other characteristics may be common throughout a range of cultures. In addition, gender roles (and perceived gender roles) vary based on a person's race or ethnicity. Gender roles influence a wide range of human behavior, often including the clothing a person chooses to wear, the profession a person pursues, manner of approach to things, the personal relationships a person enters, and how they behave within those relationships. Although gender roles have evolved and expanded, they traditionally keep women in the "private" sphere, and men in the "public" sphere. Various groups, most notably feminist movements, have led efforts to change aspects of prevailing gender roles that they believe are oppressive, inaccurate, and sexist. Gender expression A gender role, also known as a sex role, is a social role encompassing a range of behaviors and attitudes that are generally considered acceptable, appropriate, or desirable for a person based on that person's sex Sociologists tend to use the term "gender role" instead of "sex role", because the sociocultural understanding of gender is distinguished from biological conceptions of sex. In the sociology of gender, the process whereby an individual learns and acquires a gender role in society is termed gender socialization. Gender roles are culturally specific, and while most cultures distinguish only two (boy/man and girl/woman), others recognize more. Some non-Western societies have three genders: men, women, and a third gender. Buginese society has identified five genders. Androgyny has sometimes also been proposed as a third gender.