A piece of furniture with a flat top and usually four legs, used for eating, working, or putting things on.
The keys are on the table.
We bought a round table for the kitchen.
Use at the table for sitting or eating there, but on the table for something physically resting on its surface.
Common phrases & grammar
dining table · kitchen table · coffee table · set the table
a/an + adjective + table
put + something + on + the table