1) House addition 2) House-garage connection 3) Roofed passage by a house 4) Rooms 
A breezeway is an architectural feature similar to a hallway that allows the passage of a breeze between structures to accommodate high winds, allow aeration, or provide aesthetic design variation. Often a breezeway is a simple roof connecting two structures (such as a house and a garage); sometimes it can be much more like a tunnel with windows o...
A roofed walkway with open sides.
a porch or roofed passageway open on the sides, for connecting two buildings, as a house and a garage.