It is easy to understand your confusion Alan. A shaper is a machine that mounts cutting blades or knives on an arbor, usually 3 or more HP. The blades and even the rotation of the machine can often be reversed. These are mostly used by professional shops for making mouldings. Routers use router bits. Several companies developed the cross over router/shaper machine. These units have the ability to mount knives on a mandrel or use router bits and generally are under 2 HP. The average woodworker is better off with a router since it can be used free hand as well as table mounted and router bits are cheaper than knife sets. If all you plan on doing is making mouldings then a shaper is a better choice since the knives last longer and can be sharpened more often.
"Living in the D" (this means Detroit!)
"It's fine to disagree with other members as long as you respect their opinions"