Is a cavilier King Charles and a King Charles cavilier the same breed of dog?

A King Charles Spaniel is a little stockier with a bit more of a pug nose and a flatter head. They tend to have a few more facial freckles than Cavaliers. My understanding is that the two started out as the same breed. Eventually the breed had developed some characteristics that some people didn't like (these ones are now known as King Charles), and they began trying to breed them back to the original. These "back to the original" are what are now called Cavalier King Charles.

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a "king Charles" is a king that ruled England, and a cavalier king Charles SPANIEL is a dog, lol i think the guy above is right