How does Shakespeare create a distinction between the educated nobility and the coarse lower classes
Let me see...
Shakespeare created a distinction on both educated nobility and lower classes. It was told from the way it was written.
Basically, a sentence requires a subject and predicate. That means a noun and a verb that are in agreement with one another (in terms of singular and plural).
A phrase is not a complete sentence. It is a small group of words that go together and function together in some way.