what is knitting?
Knitting is where you use yarn to make fabrics or clothes and blankets with.
ok,  what is yarn?
Yarn is a type of strings interwoven with each other to make larger piece of string like rope to make textiles, Embroidery or like ropemaking.
ok, that is wonderful, so can knitting be done without yarn?
Essentially the yarn is what the knit consists of. But can be many types of fabric.