Graphic is designed by hand in the way I have a computer. Some people I know are really big into the whole screen printing and letter pressing stuff but generally people don't layout design with paper no more.
Advertisement is more planning and strategy. Graphics is generally more based in devising images and interactions. So traditionally an advertiser would decide the company needs an awesome website or book and tell the graphic designer what they want. Graphic Designers can also work freelance and people will call them up to draw graphics, most magazines have an in-house graphic designer who makes their layouts and graphics. Illustrators draw stuff that a client wants them to tell. Theoretically a graphic designer can also know how to draw and offer illustration services, but it's a bonus. However to be honest, there are a lot of people who are combinations of two or three and as long as you can do it, you can do it, but it sounds like you're interested in graphic design.
You are so great, thank you so much. It just been kind of annoying because I didnt completely know what it was that i wanted I just knew the kind of things I wanted to do was designing advertisement. So thank you a bunch for that, plus I am new and not very good at this type of stuff