There used to be a fairly clear distinction between pieced work, or patchwork items, and quilted items -- quilted items being made up of 3 layers held together by stitching. There were pieced or patchwork quilts, as well as whole cloth quilts. There were tied or tacked patchwork items. They are both valid sewing techniques, but only one is a quilt. Some of the techniques such as yoyo or cathedral window fell into the category of pieced work. Obviously the terms have become looser over time, with people getting all cranky about the lines and where they should fall.
I personally can't stand to have fleece blankets, with their tied fringed edges, called quilts. There is nothing quilt about them. Beyond that, I don't really care what people want to call their craft. I use traditional terms for my own work.
RST