breezeway

As a noun breezeway

is a structure with a roof and open sides that connects two buildings.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between breezeway and portico

is that breezeway is a structure with a roof and open sides that connects two buildings while portico is (l).

As nouns the difference between breezeway and porch

is that breezeway is a structure with a roof and open sides that connects two buildings while porch is a covered and enclosed entrance to a building, whether taken from the interior, and forming a sort of vestibule within the main wall, or projecting without and with a separate roof.

As nouns the difference between corridor and breezeway

is that corridor is a narrow hall or passage with rooms leading off it, for example in railway carriages (see Wikipedia) while breezeway is a structure with a roof and open sides that connects two buildings.

As nouns the difference between breezeway and passageway

is that breezeway is a structure with a roof and open sides that connects two buildings while passageway is a covered walkway, between rooms or buildings.