What is the difference between Bitcoin and stellar?

As a finance and cryptocurrency enthusiast, I'm often asked about the distinctions between various digital currencies. Today, I'd like to delve into the differences between Bitcoin and Stellar. While both are decentralized networks that aim to revolutionize financial transactions, their approaches and functionalities differ significantly. Bitcoin, the pioneer of cryptocurrencies, focuses primarily on being a digital store of value and a peer-to-peer electronic cash system. It's renowned for its secure blockchain technology and limited supply. However, its transaction speed and scalability have been challenged in recent years. In contrast, Stellar is a platform designed to facilitate cross-border payments and remittances, focusing on speed, efficiency, and scalability. It achieves this through its consensus mechanism and partnerships with various financial institutions. Could you elaborate on these key differences and how they impact their respective use cases?