Here's why:
* Simple predicate: This is the part of the sentence that tells what the subject does or is. It's the essential action or state of being.
* Verb: This is the word or words that express action or a state of being.
Let's look at an example:
Sentence: The cat slept on the couch.
* Subject: The cat
* Simple predicate: slept
* Verb: slept
As you can see, the simple predicate and the verb are the same word or words in this sentence.