Crawl space and Pit

Crawl space noun - Low space beneath a floor of a building; gives workers access to wiring or plumbing.

Pit and crawl space are semantically related. in covered passageway topic. In some cases you can use "Pit" instead a noun phrase "Crawl space".

Pit noun - A sunken area forming a separate space.

Crawl space and pit are semantically related. You can use "Crawl space" instead a noun "Pit".