Pimberly does not make a distinction between ‘features’ and ‘attributes’. Every property of a product is referred to as an attribute, and is configurable.
The only attribute a product must have is a Primary ID - a code that can be used to uniquely identify a product. All other attributes can be configured by an Account Admin and assigned to different product types by schema and taxonomy class.
All attributes currently set up in your account can be viewed from the Settings - Attributes menu.