The only difference is that we base our judgements of art on what we have seen, been taught, and exposed to at an early age. I someone can only open their eyes to what is around them, they will see that what I say is true. Of course art is in the eye of the beholder. So once again everything is art. What everyone else considers art is just a judgment call.
Art is the externalization of a personal idea, thought, or feeling.
Art is what everything else is not. If it doesn't float, it's not art. Words, images, or colours that appeal to the mind, eye, or body. A communication between an artist and a participant that extends beyond the immediate into the realm of shared experience. One that calls forth in the participant deeply motivated emotions.