In Finland we can walk freely, pick berries and mushroom and sleep in a tent in any forest. EDIT: well, there are some restricted forests, like military areas. And some natural parks also have restrictions on berry picking etc. But generally speaking, land owners just own the land, but anybody can walk in their lands as long as they don't cause trouble.

Cutting trees is not allowed without permission from land owner. I bet it is the same in Norway, too. But usually it is enough just to collect fallen branches, and occasionally kick down a small dead tree.

Also, the law says that starting a fire needs a permission from land owner. But that rule is paid little attention to, as everybody just uses common sense to decide when and where it is safe to have a camp-fire.

And the word you asked, I think you can find more info it if you google it or ask elsewhere. I'm a friendly person but I'm not a reply automat for every question you invent =)