The cat runs after the mouse.
Meaning: This sentence describes the cat's pursuit of a mouse by running quickly.
Choice of Words: Run means to move quickly by putting one foot in front of the other. Mouse is a small rodent with a long tail. When you put them together, "The cat runs after the mouse" means the cat is moving quickly by putting one foot in front of the other in pursuit of a small rodent with a long tail.
Alternative Expressions
Related Expressions