Nouning is the application of a platonic label to a person who exhibits behavior in some form of the platonic ideal. It is an error of absolutism. Consider the essay Nouning Considered Harmful. Excerpt:
Here's the thing: Using adjectives as nouns obscures meaning, harms discourse, impairs communication, and ultimately reduces our ability to think in a careful and nuanced way about controversial issues, let alone effect social progress. Anyone who wants to see our society become less divided rather than more, and in particular anyone who wants to combat racism, sexism, homophobia, and all other forms of prejudice and modes of oppression, should try hard to avoid the practice, and refrain from calling a person a sexist, or a racist, or a homophobe, instead applying those descriptors to his or her actions.
Good catch, rather obvious from my perspective. It was one of the singular lessons from my highschool debate class. The only thing that doesn't change about you is your last name. So call people by their last name and describe their attraction to ideas they express. If you do this enough times, you make the distinction between the person and the ideas they hold. People as vessels of spirit, et al. Very basic and fundamental thinking.