The "categorization of personalities" is the practice of grouping individuals into fixed personality types or labels based on quizzes, traits, or belief systems. Examples include 16Personalities / MBTI (e.g., INTJ, ENFP) and Zodiac signs (e.g. Virgo, Scorpio). 

Slytherin is one of the four Hogwarts houses in Harry Potter and is characterized by ambition, cunningness, leadership, and resourcefulness. Traditionally, this house also values pure-blood heritage over wizards of mixed descent, and is often associated with the Dark Arts, which is magic that is practiced for the purpose of harming or controlling others.

A Cordon Sanitaire policy is an informal commitment to exclude extremist political parties from forming coalitions. Examples include the exclusion of the Front National in France, True Finns (The Finnish Far Right) from Finland, or the call to ban the Alternative for Germany (AfD) in Germany. A Cordon Sanitaire policy is an informal commitment to exclude extremist political parties from forming coalitions. Examples include the exclusion of the Front National in France, True Finns (The Finnish Far Right) from Finland, or the call to ban the Alternative for Germany (AfD) in Germany.