This article gives a complete description of the terms that are used to describe the profile of a camshaft. Terms like lift and duration are always being tossed around and are pretty will understood but there are a whole host of other terms that you may not even be aware of that are used to describe the various measurements and characteristics that determine the profile of a camshaft. I learned a lot of useful stuff from this article and I think most of you will too.
Moose