I think scrappy means non matching, as opposed to buying a certain number of fabrics and making every block with the same fabric. I also think scappy can have a unifying fabric tying it all together like my recently posted purple quilt. The squares were very mixed, but the sashing was all the same color. Blocks or strips for a scrappy can be cut from your stash or purchased fabric. It doesn't have to be from a scrap pile. All my opinion and I'm new to this, so I may be incorrect.