RuneScape/Wood

Tree
The generic tree is your basic wood provider. Simply chop it down to get logs. Cutting down a tree gives you 25 exp to your woodcutting skill. You can find generic trees everwhere.

Dead Tree
Dead Trees are trees you find in woods that are near some places, such as Draynor Mansion north of Draynor Village. Most are just scenery and can not be used, but some can be cut down and used for firewood. Some will attack you because they are "haunted" NPCs. They provide the exact same amount of logs as normal trees and provide the same 25 exp to your woodcutting skill for chopping them down.

Oak
This tree takes Level 15 Woodcutting to chop down. Its logs can be used for Fletching, made into planks, or lit on fire. They are found in many areas.

Yew
The rarest non-member tree that is often competed for and fought over. The logs from this tree can be sold for 250-350 gp. It requires the player to have at least level 60 woodcutting skill to chop it.