why does f scott fitzgerald use word like hope and dream in the great gatsby?

I believe that Fitzgerald does this to reinforce or introduce one of the main themes of the novel. One of the major things that this novel is about is the American dream. It is about people and their hopes and dreams of getting ahead.

The character of Gatsby is said to be representative of the American dream. He is a man who is self-made, who has built himself up really without any help.

Because this is a major theme in the book, it makes sense that the author would use those words a lot to get the idea of hopes and dreams into the reader's mind.