Gender Roles:

Gender roles are cultural and personal. They determine how males and females should think, speak, dress, and interact within the context of society. Gender role is a set of expectations held by society about the ways in which men and women are supposed to behave based on their gender. 

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Gender Stereotypes

Gender stereotypes are simplistic generalizations about the gender attributes, differences, and roles of individuals and/or groups. Stereotypes can be positive or negative, but they rarely communicate accurate information about others. When people automatically apply gender assumptions to others regardless of evidence to the contrary, they are perpetuating gender stereotyping.