What are examples of rare words?

Examples of rare Words include "sonder," which describes the realization that each passerby has a life as vivid and complex as one's own; "petrichor," referring to the pleasant smell that accompanies the first rain after a long period of warm, dry weather; and "defenestration," meaning the act of throwing someone or something out of a window. These Words are not commonly used in everyday conversation but can add depth and nuance to language.