Heavy Chain Stitch
Make a small vertical stitch. Bring the needle up below this stitch as you would for a Detached Chain Stitch. Pass the thread under the vertical stitch, but not through the fabric, and insert the needle in the same hole it came up through. The rest of the stitches will pass under both the threads of the preceding loop.
A primary embroidery stitch.
Catch Stitch, Mossoul Stitch, Plaited Stitch, Russian Cross Stitch, Russian Stitch
Used extensively in Blackwork and Assisi Work.
Double Running Stitch, Line Stitch, Square Stitch, Stroke Stitch, Two-sided Line Stitch, Two-sided Stroke Stitch
Hungarian Braided Chain
Begin as you would for Heavy Chain Stitch, but pass the needle through the first (inside) loop rather than behind both.