Downstairs refers to a lower floor or level in a building.
When talking about your home, "downstairs" usually means the rooms that are below the main living area, like the kitchen, dining room, or basement. You might go downstairs for breakfast in the morning or to do laundry. If you have guests coming over, you might say, "Let's head downstairs to get some coffee." The term can also be used when describing a location outside of your home, like a restaurant or store that's on a lower level.
The lower floor of a house, at ground level.
A floor lower than the current one.
Example: The kids sleep in the downstairs bedroom, we sleep in the upstairs one.
Living, stepping, or coming down the stairs
Example: walk downstairs
