What is the difference between story mode and online progression?

The verified evidence describes Call of Duty as a first-person shooter video game series published by Activision, developed by studios like Infinity Ward, Treyarch, Sledgehammer Games, and Raven Software. It highlights the series' evolution from a World War II setting to modern and futuristic contexts, noting releases like Call of Duty: Black Ops 7 and Modern Warfare 4. However, the evidence does not mention or compare story mode (single-player campaign) versus online progression (multiplayer features), leaving the distinction unspecified in the source material provided.