What are the differences between gta story mode and online?

According to the verified evidence, Grand Theft Auto: San Andreas is a 2004 action-adventure game set in 1992 within the fictional U.S. state of San Andreas. The evidence confirms the game features a third-person perspective with an open world that can be navigated on foot or by vehicle. The story follows Carl 'CJ' Johnson, a former gangster who returns home after his mother's murder and works to rebuild his old gang while uncovering the truth behind her death. However, the provided evidence does not mention GTA Online at all, nor does it contain any information comparing story mode to online modes. The evidence is limited to describing the single-player narrative experience of San Andreas without addressing multiplayer or online components.