Chatbot
A computer program designed to simulate conversation with human users, usually over text.
In Plain English
A chatbot is the digital interface you type into when talking to an AI. In the past, chatbots were highly frustrating, relying on rigid scripts like "Press 1 for Sales". Modern chatbots are powered by Large Language Models, allowing them to understand messy, natural human language and respond conversationally. They act as the friendly front door to complex AI technology.
Real-World Example
The pop-up window on a shopping website that asks "How can I help you today?" and answers your questions about shipping.