What is the difference between Nasdaq Composite and NYSE Composite?

Can you clarify the fundamental distinction between the Nasdaq Composite and the NYSE Composite? Are they simply indices tracking different sets of stocks, or do they have distinct characteristics that set them apart in terms of their composition, performance metrics, and investor preferences? How do they differ in terms of the sectors and industries they represent, and how do these differences impact their overall performance and outlook? Additionally, how do market participants utilize these indices in their investment strategies, and what factors should investors consider when choosing between them?