Meaning: The cat's nap is over and the world around it becomes busy again.
Choice of Words: Nap: short sleep; ends: comes to an end; world: the earth and everything on it; returns: goes back to; busy: full of activity; hum: low, continuous sound.
Alternative Expressions
The cat's nap is over, and the world is busy again.
Meaning: This sentence means that the cat has woken up from its sleep, and now there is a lot of activity in the world around it.
Choice of Words: The cat's nap refers to the cat's sleep time. Over means that something has finished. Busy means that there is a lot of activity or work happening. Again means that something is happening once more after it has stopped.
The cat is awake, and the world is back to its noisy self.
Meaning: This sentence means that the cat is not sleeping anymore, and the world around it is making a lot of noise.
Choice of Words: The cat is the animal that is mentioned. Awake means that the cat is not sleeping. Noisy means that there is a lot of sound or noise. Self refers to the cat itself.
The cat's break is done, and the world is lively once more.
Meaning: This sentence means that the cat has finished its rest, and now the world around it is full of energy and activity.
Choice of Words: The cat's break refers to the cat's rest time. Done means that something is finished. Lively means that there is a lot of energy and activity. Once more means that something is happening again after it has stopped.