Erin Trusts Lawyer, New York

An organization, institution or being that has its own existence for legal or tax purposes. An entity is often an organization with an existence separate from its individual members--for example, a corporation, partnership, trust, estate or government agency. The entity is treated like a person; it can function legally, be sued, and make decisions through agents.

The person or institution designated to receive trust property upon the death of a life beneficiary. For example, Jim creates a trust through which his wife Jane receives income for the duration of her life. Their daughter, the final beneficiary, receives the trust principal after Jane's death.

The inability, as determined by a court, to handle one's own personal or financial affairs. A court may declare that a person is incompetent after a hearing at which the person is present and/or represented by an attorney. A finding of incompetence may lead to the appointment of a conservator to manage the person's affairs. Also known as 'incompetency.'

Taxes levied at death, based on the value of property left behind. Federal death taxes are called estate taxes. Some states levy inheritance taxes on people who inherit property.

A procedure under state law that gives a surviving spouse the right to demand a certain share (usually one-third to one-half) of the deceased spouse's property. The surviving spouse can take that share instead of accepting whatever he or she inherited through the deceased spouse's will. If the surviving spouse decides to take the statutory share, it's called 'taking against the will.' Dower and curtesy is another name for the same legal process.

A defendant's court papers that seek to reverse the thrust of the lawsuit by claiming that it was the plaintiff -- not the defendant -- who committed legal wrongs, and that as a result it is the defendant who is entitled to money damages or other relief. Usually filed as part of the defendant's answer -- which also denies plaintiff's claims -- a counterclaim is commonly but not always based on the same events that form the basis of the plaintiff's complaint. For example, a defendant in an auto accident lawsuit might file a counterclaim alleging that it was really the plaintiff who caused the accident. In some states, the counterclaim has been replaced by a similar legal pleading called a cross-complaint. In other states and in federal court, where counterclaims are still used, a defendant must file any counterclaim that stems from the same events covered by the plaintiff's complaint or forever lose the right to do so. In still other states where counterclaims are used, they are not mandatory, meaning a defendant is free to raise a claim that it was really the plaintiff who was at fault either in a counterclaim or later as part of a separate lawsuit.