The difference between your Last Will and Testament is that your Trust avoids probate court involvement, while your Last Will and Testament does not.
Revocable Trust
A Revocable Trust is a document that is created during your lifetime that appoints a trustee to manage your estate and directs your trustee where you want your assets to go.
Power of Attorney
These documents allow you to appoint someone to make medical/financial decisions for you if you are incapacitated, avoiding a Guardianship/Conservatorship through the Probate Court.