A Stellar account consists of a keypair with a secret key and a public key. For example, a keypair could look like this:
Public Key: GDAKOJZQRBKJAB6GUVFQVDPV5KEAE4J5HDPGYNLIGNZBD433UAHXZU5S
Secret Key: SCVOZH6L45X2CRHHCSREBXHHPWXE56HYR7UUDRRO2EGDNBOBBJDYJ3AU
The public key always starts with a "G", and the secret key always starts with an "S&...