This is my understanding: Coop = chicken house = hen house (That last one may only technically be true if you don't have roosters!) Run = pen = chicken yard
tomato tomato hehehe. Just a matter of where you are in the country etc. But most of the time a chicken house is what you call a commercial chicken farm. bc the chickens stay in the "houses" all their lives and resemble a large greenhouse. coop = 1: a cage or small enclosure (as for poultry); also : a small building for housing poultry 2 a: a confined area b: jail Cheers and good day. Nick