Coinbase
In short
An American company that provides a platform for buying, selling, and storing digital currencies like Bitcoin. It is the largest cryptocurrency exchange based in the United States.
In plain words
It is a digital shop for crypto assets. People use it to trade different coins and keep them safe in a digital wallet.
A simple example
A person uses the Coinbase app to trade their British pounds for Bitcoin. Once bought, they can hold the Bitcoin in their account or send it to someone else.
Why it matters
It provides a regulated way for millions of people to enter the crypto market. It also acts as a major custodian, meaning it holds large amounts of digital assets for other firms.
Easy to mix up
Do not confuse Coinbase the company with Coinbase Wallet, which is a separate, self-custody tool for managing your own keys.