viscose, i believe, is a non-brand name for lyocell or rayon. It's wood/plant pulp that has been very heavily treated and then made into fibers. Bamboo fiber is viscose, I believe sea silk may be a viscose, maybe soy fiber as well, not sure about that last one. Tencel is also, for sure, one of these viscose fibers. My dad thinks that some of the new, really soft linen fibers may be a viscose/lyocell, but that's mostly shirts and stuff, and really unfounded, so don't start spreading that one.

I don't know a single yarn in particular, but I'll try to look. It'll be easier for you now at least.

ETA: the yarn available from the link below looks like it could be very lovely.
http://halcyonyarn.com/Yarn_pages/yarn088.html

Carpets are available in about any color you want; they also come in an array of styles, and are made from many different types of materials. In North America carpets still remain the most selling flooring. You can virtually put carpeting in any room in your home.

Living room carpets have to be the most popular, because having a soft, plush carpet in there is awesome, because kids love to lie on the floor and play games, watch TV, or have a sleep over in the living room. Carpets are also perfect for the bedroom; they give the room the look of comfort and just add a cozy feeling to the whole decor. There are a few rooms that carpet should stay out of, like the kitchen and the bathrooms. Other than those rooms there is a carpet that would be perfect for every other room.

Most carpets are made from either a mixed blend of different fibers, polyester, man made acrylic fibers, and the most popular fiber is nylon. You should choose a carpet based on where you will be putting the carpet, and how much traffic the carpet will sustain. It is extremely important to keep these things in mind because carpets are all created differently, for different needs and uses.

Carpets come in a rather large selection now a day. The multi-level loop style happens to be the most requested carpet; these are made using loops that have been cut to different heights. The loop style is similar to the multi-level, but all the loops are the same length. The style called Saxony has yarn that is heavier than usual and has been tightly twisted.

Plush or cut pile carpets all have a completely leveled surface this is created by using yarn and twisting it all to the same length. The velvet style has been cut many times, and it actually looks like velvet. This style of carpet is perfect for formal dining rooms, or very formal rooms. The last type of carpet is called cable, these are made of very thick yarn that has been twisted, these carpets are actually the softest, and are just perfect for living rooms.

Carpet tiles are becoming the newest trend in carpets today. Personally these are fantastic for people that have children and animals. The tiles are just like a huge piece of carpet that has been cut down into tile like pieces. These tiles are either glues into place of just stick into place from a peel and stick backing. If a certain piece of the carpet gets overly dirty and can not be cleaned then you can remove the needed tiles and lay down new ones, and your carpet will look brand new again.

Carpets need to be installed by someone that has experience and the proper tools to get the job done. Laying carpet requires certain tools to help stretch the carpet until it is tight, to keep it from getting lumpy. So if you do not know how to lay carpet then just hire a professional.

Personally I like carpets and hardwood flooring, but people buying flooring in North America are still stuck on carpet. Many people like carpet to still be put in their living rooms and bedrooms, just because of their own personal preference and level of comfort.