Natural human languages are systems of communication used by people to express thoughts, ideas, and emotions. These languages consist of words, grammar, and syntax, allowing individuals to convey complex messages. Examples of natural languages include English, Spanish, and Mandarin. Each natural language has its own unique set of rules and vocabulary, shaped by cultural and historical influences. They evolve over time, adapting to the needs of their speakers. Linguists study these languages to understand their structure, development, and the ways they connect people across different societies.