text: Building is a structure with a roof and walls, such as a house or factory. Building is a structure with living room, dining room and bedroom. So, technically the lamp bobby found beside him could not be at all these rooms one at a time. House is to go to the place where one lives permanently, especially as a member of a family or household. House is the place where you live, and bobby cannot get from each and every room of the house at the same time.