The Wall
Your aim when climbing should be to climb a route with as little effort as possible. Putting sensible knowledge into practice will not only get you to the top in no time, but will make it an easier job too.
Bouldering
Performed on what is called living stone (a fake wall made to look and resemble real rock) there are no foot/hand grips on this wall but replicated real rock features, sometimes used to practice on.