This passage uses personification. Words cannot actually be stiff or heavy, and they do not need to be pushed out of one's mouth, but these adjectives and actions give the reader a vivid picture of Molly trying to say this words, and struggling greatly to do so.
They are opposing ideas, so yes. A dream is NOT reality and vice versa. Yes the phrase is an oxymoron.
:)
Answer:
A thesis statement focuses your ideas into one or two sentences. It should present the topic of your paper and also make a comment about your position in relation to the topic. Your thesis statement should tell your reader what the paper is about and also help guide your writing and keep your argument focused.