Attributes are sometimes confused with 'options',
but they are quite different. Options are choices that are available
to a customer to select when choosing a product. Attributes on the
other hand are fixed pieces of information that apply to the product
and cannot be selected or deselected by a customer.
To give an example of usage, a book
might have a number of attributes:
ISBN (unique book number that all
books have)
Publisher
Author
Genre (thriller, romance,
non-fiction, etc.)
Format (hardback, paperback, audio
book, e-book)
Once created, you can enter the
information for each and every book you feature on your site
(although there is no requirement to enter any attributes for any
item where you don't wish to).
Above: Attributes set to display on a product page