What is the difference between NYSE and NySE composite?

Excuse me, could you clarify the difference between the NYSE and the NYSE Composite for me? I understand that the New York Stock Exchange, or NYSE, is a well-known stock market, but I'm not entirely sure what the NYSE Composite entails. Is it a specific index or a broader measure of performance? How does it compare to the NYSE in terms of its composition and purpose? I'd appreciate your insights into the distinctions between these two terms.