No, Professional Liability Insurance is not the same as General Liability Insurance. However, the two policies can work together to cover different risks.
General Liability Insurance is meant to cover bodily injury and property damage as a result of your operations. General Liability excludes claims arising from professional services—this is called the "professional services exclusion."
Contrarily, a Professional Liability policy will not cover bodily injury or property damage. However, the policy may extend to all other financial losses related to the rendering of a professional service.