A "nyelv" is a system of communication used by humans, consisting of sounds, symbols, or gestures. It allows individuals to express thoughts, emotions, and ideas. Each language has its own set of rules, vocabulary, and grammar, making it unique. Languages can be categorized into families, such as Indo-European or Sino-Tibetan, based on their historical and structural relationships. There are thousands of languages spoken worldwide, with Mandarin being the most spoken language, followed by Spanish and English. Language plays a crucial role in culture, identity, and social interaction.