Anonymous Work:

A work on the copy’s or phonorecords of which no natural person is identified as author.

Architectural Work:

The design of the building as embodied in any tangible medium of expression, including a building, architectural plans, or drawings. The work includes the overall form as well as the arrangement and composition of space is an element in the design, but does not include individual standard features.

Audiovisual Work:

A work that is copyrightable which consists of images that are related and intended to be shown by use of a machine, as well as any sound accompanying a work. A common example of an audiovisual work is a slide show.

Author:

This is the person who actually created the work or, if the work was made for hire, the employer or other person for whom the work was prepared.