That's a fair distinction to make. When a tree is killed by a pest such as the emerald ash borer, it dies because the boreholes allow fungus and bacteria into

That's a fair distinction to make. When a tree is killed by a pest such as the emerald ash borer, it dies because the boreholes allow fungus and bacteria into the core of the tree. By the time the tree is visibly dead, very little of the wood is 'fresh'. It cannot be used as lumber, or even firewood.