One thing you will find with quilting is that in different parts of the country and world there are different names for the same thing and different names for pieced blocks.
English paper piecing (after I got into the pattern I realized that is what I was doing) I cut the pattern from freezer paper exactly the size of the block. Then I ironed that onto the backside of my fabric. Cut 1/4" away from the paper then sewed right next to the paper.
Paper piecing is foundation piecing but not all foundation piecing is paper piecing.
I hope I haven't just made it more confusing. I'm sure others will have lots more to say. I'm looking forward to others comments.