What are the main differences between gta v story mode and online mode?

The Wikipedia source cited discusses the development of Grand Theft Auto V, including its release dates across platforms, the size of the development team (approximately 1,000 people), and its connection to previous Rockstar Games titles like Red Dead Redemption and Max Payne 3. However, it does not address gameplay modes such as story mode or online mode, nor does it compare their features, objectives, or mechanics. To accurately answer the question about differences between these modes, additional sources detailing the game's structure, mode-specific content, or design philosophy would be required.