concourse

As nouns the difference between atria and concourse

is that atria is while concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal.

As nouns the difference between concourse and vestibule

is that concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal while vestibule is .

As nouns the difference between terminal and concourse

is that terminal is terminal (at an airport etc) while concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal.

As a noun concourse

is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between concourse and contest

is that concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal while contest is (uncountable) controversy; debate.

As a verb contest is

to contend.

As nouns the difference between concourse and rotunda

is that concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal while rotunda is a round building, usually small, often with a dome.

As nouns the difference between concourse and atrium

is that concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal while atrium is a central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

As nouns the difference between corridor and concourse

is that corridor is a narrow hall or passage with rooms leading off it, for example in railway carriages (see Wikipedia) while concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal.

As nouns the difference between competitions and concourse

is that competitions is plural of lang=en while concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal.

As nouns the difference between concourse and mezzanine

is that concourse is a large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal while mezzanine is a balcony in an auditorium.

As an adjective mezzanine is

fulfilling an intermediate or secondary function.