Green is not a species of wood- it just means recently cut wood that still contains much of the moisture and sap of the living tree. When cured (means dried) it will burn much better. Cured Oak is among the best firewood for heat.
yes, oak wood is a harder wood than pine wood.
Yes. Pine does not burn as long- quick, hot fire. Good for kindling.
Dry, seasoned and resinous pine wood burns fastest.
oak is better for building
Avocado wood (and any natural wood) will burn. Heat value is similar to elm. More heat value than pine, less than oak.
Hard wood such as oak or cedar. Cedar makes the best kindling. You can burn pine, it just doesn't last very long and creates lots of creosote.
Locust wood will burn faster, it is softer than oak.
pine
Oak will hold up much better because it is a heavier wood and is much more durable.
Various gum trees make for fairly decent fireword. Not as good as oak or hickory, but better than cottonwood pine or fir. Many species of gum are a pain to split, but once split burn OK.
pine and oak
Yes. It makes great firewood. Not as hot as Oak, better than pine and the like.
It is better to burn only untreated hardwoods (pine, oak, mesquite) in your fireplace. Others leave residues or release unwanted chemicals.
Pine, birch and oak =]