  Classical definitions, at least as they are portrayed in contemporary discussions of the definition of art,  take artworks to be characterized by a single type of property. The standard candidates are representational properties, expressive properties, and formal properties. So there are representational or mimetic definitions, expressive definitions, and formalist definitions, which hold that artworks are characterized by their possession of, respectively, representational, expressive, and formal properties. It is not difficult to find fault with these simple definitions. For example, possessing representational, expressive, and formal properties cannot be sufficient conditions, since, obviously, instructional manuals are representations, but not typically artworks, human faces and gestures have expressive properties without being works of art, and both natural objects and artifacts produced solely for homely utilitarian purposes have formal properties but are not artworks.