Bitcoin address can be simply described as a private/public key pair. The public key is used to add coins to a wallet address while the private is used to send coins from the address. Therefore you MUST keep your private key hidden!
These addresses are for the bitcoin blockchain and are not related to lightning network addresses.
These addresses relate to all forks of the original bitcoin network e.g BTC, BCH, and BSV.
Bitcoin Cash (BCH) addresses have to be converted to q addresses (start with a q) and can be converted HERE