Rooms in a house

1 Front Room

2 Living Room

3 Bedroom

5 Dinning Room

4 Bathroom

6 Laundry Room

8 Extras

7 Exceptions

Hall

Kitchen

Drinking Room

Game Room

Gun Room

Pool Room

Shoe Room

Work Room

Master bedroom/Master bathroom

Upstairs/downtairs

stair is a word (single step) but in reality, they are almost always in a group (stairs). Usually, the only time "s" is when it is being used as a adjective

Floor Plan