Yes, most wood is hard.
Yes.very hard wood.takes stain well.typically knot free too.looks somewhat like white oak
It would be in the broad range of hard wood. Generally any slow growing tree is a hard wood.
It is a hard wood.
It is a hard wood.
Yes, although it is somewhat hard to find
All conifer wood is classed as softwood.
Maple
oak is a very hard wood
A seed is not a hard wood or soft wood. The seed might be of a hardwood or soft wood tree. I think many (not all) eucalypts (gums) are hard wood trees.
It is a hard wood.
Mulberry wood is a hard wood.
Wood that has been burned until it turns white cannot be burned again. Some trees (notably redwoods) have very fire-resistant bark filled with Tannins (also used in fire extinguishers) and so are somewhat protected from fire, but all unburned wood will burn if you try hard enough.