What is the difference between Google Pay and Google Wallet?

Google Pay and Google Wallet are both products offered by Google, but they serve different purposes. Google Pay is primarily a payment service that allows users to pay for items online or in stores using their mobile devices. It integrates various payment methods, including credit and debit cards, for a seamless payment experience. On the other hand, Google Wallet is a more comprehensive digital wallet that not only includes payment functionality but also stores and manages digital cards, such as loyalty cards, gift cards, and even identification documents like driver's licenses. Additionally, Google Wallet offers features like contactless payments and the ability to send and receive money with friends.