When people label humans as narcissists or their behaviors as narcissistic (or socialist/fascist/sexist/etc), I mostly feel confused at what they mean and wish

When people label humans as narcissists or their behaviors as narcissistic (or socialist/fascist/sexist/etc), I mostly feel confused at what they mean and wish they would describe more specific behaviors, and ideally, how they themselves were feeling in response to those behaviors. I think we sometimes use such labels as shortcuts and assume others know what we mean, and yet by abstracting so much, we can create more distance and less understanding. I believe these terms can become buckets into which we throw all sorts of "they did something evil / that hurt me" actions that may or may not relate to the theory of narcissism. In lieu of that, when I hear someone claim someone else is a narcissist, I mostly just assume the person claiming that feels very hurt or angry by something that other person did.