According to judith andre, today the term "stereotype" means: "a conventional, formulaic, and usually conception, opinion, or belief; a person, group, event, or issue considered to typify or conform to an unvarying "

oversimplified

Explanation:

When describing a group of people if an oversimplified generalization is done then this oversimplification is known as a stereotype.

Stereotypes are generally negative and encourage prejudice.

Types of stereotype

Explicit

These stereotypes are common knowledge and the one person verbalizes the stereotype to the other person.

Implicit

These stereotypes are not known by the person at a conscious level but are known at a subconscious level.

the answer would be in this answer. someone already asked the question.  

nigger, that word was originated for white folks   to keep black people under

and when black people use it, they know that's just how they greet each other

and when white folks use it, they know there's a double meaning under