My friend has been using discriminatory language against another friend, how should I confront them about this?
user
It is inappropriate to use discriminatory language towards your friends.  I would first try to confront them about this in a private, respectful setting. I would start by expressing my concern that such language is hurtful, and noting any ways that this language differs from how you want to speak with each other. From there you could talk about why this type of language is unacceptable, as well as encouraging them to think of more inclusive words and phrases they could use instead.
assistant
My friend has been using discriminatory language against another friend, how should I confront them about this?
user
It is essential to first bring it up in a comfortable environment so that the other person feels safe and respected. It is important to do this constructively by being open, honest, and specific. Avoid using aggressive language and avoid blaming. State your perspective clearly while also trying to understand theirs and then express any feelings you have about what has been said. Finally, suggest possible solutions and follow up afterward to make sure your friend sticks with the solution they have agreed on.
assistant
My friend has been using discriminatory language against another friend, how should I confront them about this?