No, fibers are the raw material used to make yarn. Yarn is made by spinning fibers together to create a continuous strand that can be used in textiles.
A strand of wool could be a length of yarn.
Knit fabrics do not fray, because knitted fabric is made of a single strand of yarn with row upon row of loops pulled through loops.
Gossamer is a word that means light weight and airy, such as lace. It is also the name of a type of yarn produced by the Knit Picks yarn company, which is a fine, light weight, single strand yarn. There is also a knitting store in Oregon called Gossamer, The Knitting Place. To answer your question, yes, a gossamer shawl would be a shawl that is knitted out of a lace weight, single ply yarn.
A niddy noddy is used with yarn. What it does is help you make "skeins" with yarn. One of the nice things about a niddy noddy, is that if you know the length of a single "wrap" of a strand of yarn, then you can count how many wraps you make and then have an approximation of the yardage in that skein.
Yarn over means to wrap the working strand of yarn around the right needle, making another stitch.
A strand of what could become wool if caught on a sheep-pen barbed wire would be called fleece.
The short answer is a qualified yes.-If you put acrylic wall paint on a single strand of yarn (natural fiber or synthetic), the yarn will be encased in a paint that will make it more rigid, and the paint will crack if you bend the yarn.- If you put acrylic wall paint on knitted yarn (for example a sweater) the acrylic will sit on the surface and dry to a hard finish. When the yarn bends (in the washer or in use) the paint will crack and eventually start to flake off, although it will not all come off.- If you put acrylic craft or artists' paint on a single strand of yarn, you will get the same result as above.- If you put acrylic craft or artists' paint on knitted yarn, yo will also get the results above.*Note*- If your desire is to paint on a knitted piece and have the yarn stay flexible, there is a paint medium used for fabrics (you can find it at most craft stores) that will make the paint more flexible and adhere better.
Yarn
The DNA strand contains the genetic information needed for cellular function.
Slub
When the yarn is made of cotton or wool, it is natural.