Meaning: The dog kept barking continuously without stopping.
Choice of Words:Incessantly means continuously or without stopping. Barked is the sound a dog makes.
Alternative Expressions
The dog barked non-stop.
Meaning: This sentence means the same as the first sentence. It means that the dog barked without stopping.
Choice of Words: The phrase "non-stop" means "without stopping" or "continuously".
The dog kept barking.
Meaning: This sentence means that the dog continued to bark. It doesn't necessarily mean that the dog barked without stopping, but it does mean that the dog barked for a while.
Choice of Words: The verb "kept" means "continued to do something".