Difference between Upstairs and Foyer

UPSTAIRS vs FOYER: NOUN

A large entrance or reception room or area
A lobby or anteroom, as of a theater or hotel.
An entrance hall; a vestibule.
In theaters, opera-houses, ect., a public room at or near the entrance next to or comprising the lobby: often, as in the Grand Opera at Paris, a magnificent saloon, elaborately decorated.
In a furnace, the crucible or basin which holds the molten metal.
A lobby in a theater; a greenroom.
The crucible or basin in a furnace which receives the molten metal.
A lobby, corridor, or waiting room, used in a hotel, theater, etc.

In or to an upper story: as, to go up-stairs.
Pertaining or relating to an upper story or flat; being above stairs: as, an up-stairs room.

Upwards, Trestle, Down, Upper, There, Yonder, Storey, Deck, Floor, Stairs, Stairwell, Up the stairs, On a higher floor, In the mind, In the head

Dormitory, Parlor, Halls, Fireplace, Concourse, Entrance, Lounge, Downstairs, Hallway, Entrance hall, Antechamber, Lobby, Anteroom, Hall, Vestibule

Over, Climb, Install, Aloft, Above, Upwards, Trestle, Down, Upper, There, Yonder, Storey, Deck, Floor, Stairwell

House, Clubhouse, Dormitory, Parlor, Fireplace, Concourse, Entrance, Lounge, Downstairs, Hallway, Entrance hall, Antechamber, Lobby, Anteroom, Vestibule

Rent an upstairs with a secondary suite below.
Paul went back upstairs, broke bread, and ate.
It bothered me each time I came upstairs.
Upstairs: a table in the dining room above.
Davis goes upstairs once more before the bell.
We parked the car here and went upstairs.
Also the upstairs bedroom is a little warmer.
My PC is actually upstairs in another room.
Ford testified that the alleged assault happened in a bedroom upstairs, while she was on her way to the upstairs bathroom.
Overweight dogs are smart dogs and if the food bowl moves upstairs, they will head upstairs, too.

What about between the Foyer and Living Room?
How does one properly size a foyer chandelier?
Your Formal Dining Room opens to the Foyer.
Flames were visible rising along the foyer walls.
Add the foyer length plus foyer width in feet and it is equivalent to the proper chandelier size diameter in inches.
Upon arrival at the Visiting Foyer, they will hand both their gate pass and ID to the Foyer Officer.
Method construction is the leick mission foyer table is designed foyer.
Ultimate mission oak mission foyer russet with a natural fir top balances beautifully designed foyer.
Ii sting will also be displayed in the Great Hall Foyer and Hunter Building Foyer.
Upgraded flooring in the foyer, extended foyer and dining.