Barbecue pit and Pit

Barbecue pit noun - A pit where wood or charcoal is burned to make a bed of hot coals suitable for barbecuing meat.

Pit and barbecue pit are semantically related. In some cases you can use "Pit" instead a noun phrase "Barbecue pit".

Pit noun - A sunken area forming a separate space.

Barbecue pit and pit are semantically related. Sometimes you can replace phrase "Barbecue pit" with "Pit", this terms are similar.