Everyone with a simple camera (or phone) is, technically, a "photographer." They are able to take a "photograph." Many people advertise themselves as "photographers," happy to take portraits, wedding pictures, senior pictures, baby pictures, maternity pictures, headshots, and of course, "fashion." When seeking out a photographer, people look for pricing and they look for quality. The craft of photography is unique in that a photographer is not just creating one product for purchase. A photographer who shoots multiple images is producing as many "products" as images. Each image is its own product; it has a value.
Here's a few key distinctions between a professional photographer and an amateur: