A document is nothing more than a set of meta-data property values and an archive containing the corresponding full-text file

A document is a blob regarded as a black-box object

A document is a full-text document with the links to the other full-text documents

Very often, a document is a JASON object

A document is anything having internal structure and regarded as a white box

A document is a data aggregate with its internal structure made accessible for the API

A document within the Document Data Model could be queried using the property values from its internal structure

A document is the object containing all the metadata of a full-text document