It's ka a papal bull, because of its leaden seal [bulla].
Symbols
A document can also be called a paper, a text file or simply a written document.
A written document giving someone permission to do something is called a "license."
base document
In democratic countries, the document is called "Constitution".
It's called an oldsmobile. Or an antique or antiquated car.
Common sense
Pictorial characters written on bones of animals.
The document written by the separatists was called the Mayflower Compact. It was written and signed while they were still aboard the Mayflower and was composed to be the first document that would govern the Plymouth Colony.
The introduction to the Constitution is called the preamble. The purpose is to explain the function of the document. It was written in 1787.
This very important historical document is called the Declaration of Independence.
A letter written by William Barret Travis.