The first analogy is abstract. The second analogy is concrete. Shakespeare: plays:: Mark Twain: Novels; screen: computer:: face: watch. Sorry, I'm not sure how to prove the concrete/abstract part but I'm sure that I'm right.
These so called word analogies or verbal analogies are available in lot of different types. In the examples given below the first one Shakespeare/plays, it is classified as performer and action analogy. The second one screen/computer corresponds to the type of an object and part of the whole Analogy.
Both are concrete analogies. Concrete analogies tend to be used to illustrate abstract concepts.