Concourse and Porch

Concourse noun - A typically long narrow way connecting parts of a building.

Porch and concourse are semantically related. In some cases you can use "Porch" instead a noun "Concourse".

Porch noun - A covered structure adjoining an entrance to a building.

Concourse and porch are semantically related. Sometimes you can use "Concourse" instead a noun "Porch".