One of the first stitches to learn in sewing or embroidery. In sewing, where the stitches are long it’s known as “basting.” Nothing to do with turkeys.
These embroidery patterns of borders are open to interpretation. Borders can also be edgings (as edgings can be borders as well) but we’re calling a border a design that doesn’t necessarily repeat like most edgings do. Pillowcases fall into this category as do floral sprays and yes, they can repeat if you want them to!