The heavy rain caused a cave-in in the road.

The cephalic index is a measurement used in anthropology to determine the shape of the head.

The chief inspector is responsible for leading the investigation.

She used Chinese ink to paint the calligraphy.

The close-in proximity of the two buildings allows for easy communication between employees.

Fuel injection is a common method used in modern engines.

The fuel injector is responsible for delivering fuel into the combustion chamber.

The government provides grant-in-aid to individuals and organizations for educational purposes.

The commander in chief is responsible for making strategic decisions.

Compound interest is a powerful financial concept.