What is the difference between symmetric and asymmetric cryptography ?

Symmetric Encryption is a process of converting Readable data (Clear-Text or Plain-Text) to Cipher-Text (Unreadable format) and converting it back to Clear-Text using same key and with Asymmetric you require both side different keys.

Asymmetric encryption, also known as public-key encryption, utilizes a pair of keys; a public key and a private key. If you encrypt data with the public key, only the holder of the corresponding private key can decrypt the data, hence ensuring confidentiality while Symmetric encryption, means that the encryption and decryption operations utilize the same key