Dining-hall and Dining room

Dining-hall noun - A large room at a college or university; used especially for dining.

Dining room and dining-hall are semantically related. In some cases you can use "Dining room" instead a noun phrase "Dining-hall".

Dining room noun - A room used for dining.

Dining-hall and dining room are semantically related. Sometimes you can replace phrase "Dining-hall" with "Dining room", this phrases are similar.