An address or Wallet address can be likened to your personal bank account number. It refers to a set of unique alphanumeric characters which you use to receive payment or used when making crypto purchases to have your coins sent to your wallet.
Every cryptocurrency user and wallet has its unique wallet address; hence no two persons have the same crypto wallet address. A sample cryptocurrency wallet address looks like this: 36uNFztPaBJs3tPXZJaUwFMyeqr3GPKgap.
Also just as each cryptocurrency has its own wallet and address, every crypto has its peculiar address format too.