It is subjective. I stick with the more stringent traditional sense of the word. Painting, sculpture, drawings, certain aspects of architecture, and to a extent i separate the art from the craft. I have seen photography that i may consider art but those photos are few and far between. That is because the nature of the medium leans strongly toward craft and technical skills. A brick layer can be both a tradesman and a craftsman. Laying the bricks doesn't make it art, but the final design and finished product might be art. Limr mentioned this above comparing literature. just like slapping paint on a canvas doesn't necessarily make it art. Totally subjective.
I tend to agree with bribrius, even more so, craft and art are in my view two completely different propositions, regardless of medium. It might be a painting or a brick wall, it does not really matter to me.
Call me a snob, but there is a clear line between a craftsman and an artist. A craftsman can be trained, an artist can not.
A craftsman makes beautiful things - pots, vases, paintings, sculptures or photographs. Sometimes very beautiful, amazing things. They are great objects of craftsmanship, but there is nothing beyond it.
An artist makes same things only to use them as a medium to share his ideas, views, feelings, philosophy and vision that have a more or less universal appeal.
In other words to make it very simple - a craftsman is somebody who can pronounce sounds and words perfectly well and clear, or who is able to write letters and words beautifully. And he knows grammar as well, unlike me.
An artist uses these words and sounds and letters to give us poems and prose, that have meaning and are able to change us. You can stare at an alphabet and it will never change you ( unless Ella sings it). You can read "Master and Margarita" and it will change you forever***. See the difference?
That is essentially a difference. One can learn to write and to speak. But to make the next step, to be an artist you have to have something inside to say or to write. Something that is worth saying. That is where 99% stumble, be it fine art or photography. One can be an undisputed master of photography, but he may never become an artist.
Sometimes I see a very "American" attitude towards art: anyone can be an artist. Anyone has something to say. Everyone is beautiful deep down inside. Nope. Sorry. Only selected few have got it, sadly. Because otherwise there is only one step to "Everything is art", which is of course only half a step from "There is no art".
PS ***Of course, you can read (a proverbial) "Master and Margarita" (put any title here instead), and it will not change you at all. Well, then it is your problem, because in your world there is probably no difference between art and craft.