in silk screening you actually use a silk screen, lol. hehe, it's literal.
here's a pic of some of mine:
**this is an incomplete description of how it goes--i know there are other ways/materials but for the sake of explanation**
1) the basic idea is you take a screen (looks kinda like a picture frame with a really fine mesh that is pulled really really tight) and
2) you block out an area using plastic stencil stuff (thats the green stuff, think of freezer paper but really expensive) or you paint the outline of your stencil--that's the pink stuff
3) the you put your screen over your paper or t-shirt and put ink on it and use a squeegie to pull the ink across. you use the squeegie to push the ink thru the screen and onto your paper/shirt.
in stenciling you cut out a stenicl and paint in the design using a paintbrush, spray paint, roller etc.
the idea is that silk screening can be done faster and more efficiently but it is really expensive. screens can cost 100 bucks or more and so stencilig is a much more DIY/pocketbook--friendly way of doing stuff, lol.
hope that made sense.