as ikimshi said different companies use different materials. Such as arbor uses all natural bamboo and other woods, even their fiberglass is infused with tree sap or something like that. Generally wood cores are standard, but burton makes 2 very high end boards with synthetic cores. other than that there is carbon fiber. Every company uses it differently, whether it be lateral strips, or v "forks, or carbon fiber rods. Carbon fiber is to make the board stiffer, so your low end jib board wont have very much if any. Burton and forum used engineered grain direction, which directs the grain of the wood core to the edge. They say it holds an edge better but i haven't noticed much difference. There is the base, you can get extruded or sintered, or teflon if you wanna drop $1500 on a burton method. Sidewalls, a lot of companies are using urethane sidewalls on their park boards now to reduce damage if hit a rail with your sidewall. topsheet, some companies actually don't even use topsheets any more to reduce weight, others use very thin topsheets. The profile of the core, a positive profile will be a very stiff board, a negative core profile will be softer. Tapered tips, greatly reduces weight. I could go on and on, just read up on it. But don't always take the companies word for it, no matter what company your lookin at the will usually overhype their own tech.