2, related words: drowning: walking from shallow water. Like wading across the river. Paddle: Go where there is water. Wade across the river. Both wading and wading refer to walking in water, but wading refers to walking in shallow water. However, there is no depth requirement for water. However, there is no clear definition of which one must be used, and they are usually interchangeable. What is quite different from the first two is running water, not walking in water at all. It means flow, flow down, flow down. And the other two words are easier to distinguish.