Sometimes the two smaller words do not help to explain the bigger word. Here are two examples. You might find more. After a heavy rainfall, water lies on the ground in puddles. Some people like to jump in the puddles and splash around.
Some people like to walk in the mud and feel it ooze under their feet.
Then you can walk in the puddles and in the mud as much as you please. It's fun to walk in the mud, but muddy boots should not be worn inside. Animals, such as pigs and elephants, like to roll in the mud. This helps them to stay clean. The mud gets rid of bugs such as fleas.