A meaningful quote and/or a universal idea could serve as hooks for the introuction of a literary analysis.
An analgy or metaphor is typically used in a compare contrast essay, a definition of terms is more for a research paper as is a startling fact.
warranty means your item that you have can be fixed
example: I bought a PS5 and I put warranty on it.
I break the ps5. now my ps5 can be fix or I can get a new one because I have a warranty on my ps5
Mr. Praed says he knows nothing of Mrs. Warren's profession, but his behavior indicates otherwise. However, he does not seem bothered by the fact that Mrs. Warren is a "working woman." He is nonjudgmental. As an architect, he is not of the upper class, but of the middle class.
Mr. Crofts, however, is directly involved in Mrs. Warren's profession by the fact that he owns brothels. His moral sensibility is much worse than Mr. Praed's as a result. He is a member of the upper class and feels very entitled to his wealth--also lowering his moral sensibility.