Natural Language Processing (NLP) enables human-computer interaction by allowing machines to understand, interpret, and respond to human language. Through text analysis and language models, NLP facilitates various applications, including chatbots, voice assistants, and sentiment analysis tools. By processing linguistic nuances and contextual meaning, NLP bridges the communication gap between humans and machines, providing seamless interaction. This technology enhances user experience and accessibility, allowing more intuitive and efficient engagement with digital systems.