The Whip Stitch was one of the first stitches I ever learned, without even knowing it’s name for the longest time. When I was a teenager beginning to sew and in my early college years, I’m not even sure I knew that hand stitching styles had different names….. or even that there were various hand stitching styles! Now to share the knowledge…
The Overcast Stitch is mainly used on the edge of fabrics to prevent them from fraying or unraveling. The point of it is the same as the Overlock Stitch, although that is done by machine. Almost all of your clothes most likely have the Overlock Stitch as the seams, since that is commonly used in factories.
The blanket stitch is sometimes used for bar closures or eyes, but most often of course used around the edge of a blanket. I’ve most often seen it around fleece blankets, although it’s only point there is for decoration since fleece is one of the few fabrics that does not fray. I actually can’t currently think of any others that don’t fray, so it may be the only one….
The Catch Stitch is most often used for hemming purposes. It is visible on the inside of the garment, only catching the lining of the garment (not reaching the outside layer). This style of stitching is tough though since you stitch backward to forward with each stitch. Hopefully my description of how to do it and the picture will be clear enough for you to understand.