Old Faithful is the specific name of a geological phenomenon. The opposite of a proper noun is a common noun, sometimes known as a generic noun. A common noun is the generic name of an item in a class or group and is not capitalized unless appearing at the beginning of a sentence or in a title. The girl crossed the river.
The United States district courts are the general trial courts of the United States federal courts. There are 94 such courts. Both civil and criminal cases are filed in the district court, which is a court of both law and equity. There is a United States bankruptcy court and a number of bankruptcy judges associated with each United States district court.
District courts hold federal trials, while the circuit courts hold both trials and appeals for cases decided by district courts. Within the country and its associated territories, there are 94 district courts (at least one per state) and 13 circuit courts. The district court is where a federal case begins.