A force-directed network visualizes the relationships between actors, directors, and films. Actors and directors are color-coded by their professional role, with films as separate nodes. The graph uses a physics simulation with link, charge, and collision forces to position the nodes. Using `d3.forceSimulation` and `d3.forceLink`, the layout is interactive, and users can drag nodes to explore connections. The code loads data from JSON and renders the network as SVG.