Once the wool is sheared from the sheep, it is cleaned, carded and spun into thread.
A spinning wheel.
This needlework is embroidery stitched with wool thread instead of cotton or silk thread.
Thread is spun from fleece by spinners.
The finest wool in terms of yarn weight is sometimes called thread weight.
sheep farmng, wool dying, wool-turning-into-thread-ing
You can use their wool for thread.
Yes, and in fact they form without wool thread at all, which is just as well, because sheep tend to be rather fatally poor at caving.
Cotton wool is made from the fibers that surround the seeds of the cotton plant . The difference between cotton wool and cotton thread or cotton fabric is that cotton wool is only cleaned and not spun into thread for use as something else.
Wool, Yarn or thread :)
The wool fibre is generally thinner and curlier than the cotton fibre, so for the same weight of material, a wool thread traps more air than a cotton thread. And for insulating purposes, you want to trap as much air as possible. With a denser thread, you have to use several or thicker layers to get the same result.
Your answer depends on the thickness of the wool. A thread-weight length will be longer than a bulky-weight yarn.
Cotton and wool both require a mechanical process (called spinning) to turn them into thread. Then something must be done to the thread to make it into something similar to cloth. The earliest peoples did not know how to do this, but they learned spinning wool very early, probably 5000 BCE