Copyright registrations are categorized into one of five standard groups, each having separate application and submission requirements: literary works, performing arts, visual art, sound recordings, and serials.
Below are examples from the U.S. Copyright Office to understand each category.
Nondramatic Literary Works
fiction
nonfiction
poetry
textbooks
reference works
directories
catalogs
advertising copy
computer programs
databases
compilations of information
manuscripts
dissertations
theses
reports
speeches
bound or looseleaf volumes
pamphlets
brochures
Performing Arts
dramatic works (i.e. spoken text, plot, and directions for action)
works prepared for the purpose of being performed before an audience
musical works including accompanying words
dramatic works including accompanying music
pantomimes
choreographic works
motion pictures
audiovisual works
Visual Art
pictorial
graphic
sculptural
2-dimensional and 3-dimensional works
fine, graphic, and applied art
photographs
prints
art reproductions
maps, globes, and charts
technical drawings
diagrams
models
labels and advertisements
artificial flowers
artwork applied to clothing
stickers
cartoons and comic strips
collages
toys
murals
paintings
enamel works
fabric, floor, and wallcovering designs
games
puzzles
holograms
laser artwork
jewelry
mosaics
needlework
engravings and etchings
sewing patterns
posters
record jackets
stencils
blueprints
weaving designs
greeting cards
Sound Recordings
works that result from the fixation of a series of musical, spoken, or other sounds (does not include the sounds accompanying a motion picture or other audiovisual work)
Serials
work issued in successive parts bearing numerical or chronological designations periodicals