PayPal, FF and GS are all companies or services in the financial field. Below I will introduce their characteristics and differences respectively.

1. PayPal: PayPal is a global online payment company founded in 1998. It provides a safe, fast and convenient online payment method, and users can shop, transfer money, receive payments and other operations through its platform. PayPal supports multiple currencies and cooperates with many e-commerce websites and online platforms. Compared to traditional credit card payments, using PayPal to pay on some websites can provide higher security because the actual credit card information is not directly exposed to the merchant.

2. FF (Freedom Finance): FF is a financial technology company founded in 2014. It is one of the largest online loan marketplaces in Russia, providing a platform to connect lenders and borrowers. FF's main business is to provide personal loans and mortgage loans. Borrowers can apply for loans through the platform and conduct transactions with suitable lending institutions. FF's goal is to provide more efficient, transparent and convenient loan services by leveraging technological innovation and data analysis.

3. GS (Goldman Sachs): GS is a global investment banking and financial services company in the United States, founded in 1869. GS provides a wide range of financial products and services, including investment banking, asset management, securities trading, lending and consulting. GS has strong strength and reputation in global financial markets and is one of the largest investment banks in the world.

In summary, PayPal is an online payment company that provides fast and secure payment methods; FF is an online loan market that connects borrowers and lending institutions; GS is a global investment bank that provides A wide range of financial services. They differ in business areas and scope of services, but all play an important role in the financial sector.