Will

• A will is a document written by a person to direct how their property is handled in the event of her death.
  
  

Power of Attorney

• Power of attorney is a document a person (called the principal) writes, wherein he grant another person (called the agent) the right to make decisions on his behalf.
  
  

Durable Power of Attorney

• Durable power of attorney means the principal has granted the agent the right to keep making decisions on her behalf even after the principal dies.
  
  

Estate

• Once a person dies, his property is referred to as an estate. The estate may be disposed of as directed by the deceased's will, or by someone with durable power of attorney.
  
  

Living Will

• A living will is a document in which in a person directs how she wants to be treated in the case she is incapacitated and unable to make decisions for herself, but has not died. Both a living will (sometimes referred to as a medical directive or other terms) and power of attorney can be used by someone who wants to ensure her wishes are followed in the eventuality she dies or is incapacitated.