If the vase falls to the floor, it might break.
She broke the match.
Word: "break"
the same meaning

Rub my hands.
The cat rubbed itself against my leg.
Word: "rub"
the same meaning

The union of opposing factions.
The Soviet Union.
Word: "union"
different meanings

The hollow of the hand or of a tree.
He built himself a cabin in a hollow high up in the Rockies.
Word: "hollow"
different meanings