A grain of salt.
A grain of sand.
Word: "grain"
the same meaning

The ball was already emptying out before the fire alarm sounded.
The ball rolled into the corner pocket.
Word: "ball"
different meanings

The job of repairing the engine took several hours.
Estimates of the city's loss on that job ranged as high as a million dollars.
Word: "job"
the same meaning

He came to a bad end.
The end of town.
Word: "end"
different meanings