A noun class is a system used in some languages to categorize nouns based on shared characteristics, such as gender, shape, or function. Each class often has specific prefixes or suffixes that modify verbs, adjectives, and pronouns associated with the nouns. For example, in languages like Swahili or Zulu, nouns are grouped into classes that can affect agreement in sentences. Noun classes help speakers convey meaning and relationships between words more clearly. In addition to grammatical functions, they can also reflect cultural aspects, as certain classes may represent animate versus inanimate objects or different types of living beings, enhancing communication within the language.