逃跑 (táopǎo) means 'to flee, to run away' from a specific danger or pursuer. It's more concrete and common in speech than 逃 (táo), which is more formal and often appears in compounds (e.g., 逃亡 'flee into exile'). Unlike 跑 (pǎo), which can simply mean 'to run' as a physical action, 逃跑 always implies escaping from something.