Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to control health problems.

She has many facets to her personality.

The fish swam gracefully with its fins.

The resources are finite.

The constant changes in the stock market create a state of flux.

Friction is the resistance encountered when two objects move against each other.

He was diagnosed with hepatitis last month.

The induction ceremony for new employees will be held next week.

She decided to invert the colors of the painting.

The farmers use irrigation to water their crops.