If is your question is serious: a keypair - usually RSA based (Rivest-Shamir-Adleman algorhythm). But there are other types too for more "modern" crypto assets, e.g. ECC (Elliptic Curve Craptography). It based on the invented public key cryprography (was invented on the '70s). An asimmetric keypair (PKC - public key cryptography). Your private key is yours (do dot share), the public key is for everybody who wants to send a crypted message to you (message can be e.g. a transaction too). Only you can decrypt it with your private key. Your "wallet" is your private key, regarding all crypto (not just bitcoin). See. e.g. Coinomi. The LN wallet is for a second layer wallet on the bitcoin blockchain (because it is too slow, you have to wait approx 1h to be verified). For LN wallet see e.g. Wallet of Satoshi.
Sorry if your question was a joke only