This is a paste from my state forestry commission taken from a PDF:
"CORD - A volume measure of wood. A standard when cut and stacked is 4X4X8 feet, or 128 cubic feet of space.
Cord volume in standing trees averages 70 to 90 cubic feet, because only the tree volume is measured - not the tree volume plus the empty spaces that form when the wood is stacked. Pulpwood volume is typically measured in
cords. A face cord or short cord is 4 feet by 8 feet of any length wood less than 4 feet and is often the measurement used for firewood."
And this is from the state ag department market bulletin, as regards firewood sales:
"All firewood advertised in the Market Bulletin must be cut from the advertiser's personally owned property. In addition, by law, terms such as face cord, rack, pile, truckload, etc., cannot be used to advertise firewood. Advertisers must use the standard unit of measure, the cord, when specifying the amount of firewood for sale."
Where the exact law is, I don't know, but these are official enough for around here, although frequently violated on CL.
On CL you can get you a "standing about face farmers pulp rick load, all ranked up" for blah blah , or any variation. My fav so far I have seen is a "reck" of wood.