ERC 20 wallet address are wallets that supports all ERC 20 tokens however there is a twist in things and that is, all wallets which allows users to be in control of their private keys makes the addition of various ERC 20 tokens possible in that particular wallet. That is, let's assume a new project gets launched on the Ethereum blockchain and brought its ERC 20 token, a user with his private keys can easily receive the new token in his wallet by just adding the contract address while in some cases the tokens reflects automatically in the wallet. This little illustration is not possible with centralized platforms like Coinbase because you do not have your private keys thus can only receive the tokens they support.
Therefore to get an ERC 20 wallet you use to receive a good number of tokens and coins, download and install trust wallet.