Homonym: agent (Representative)
An "agent" is a person or entity that acts on behalf of another individual or organization. Agents are often involved in various fields, such as real estate, sports, and entertainment, where they represent clients to negotiate deals, manage contracts, and provide advice. Their primary role is to advocate for the interests of those they represent.
In a broader context, the term "agent" can also refer to a substance or factor that produces an effect or causes a change. For example, in science, a chemical agent can initiate a reaction, while in technology, a software agent may perform tasks autonomously, such as in artificial intelligence systems.