Dynamics is how systems changes over time.
Examples:
- Planetary dynamics - planetary orbits
- Fluid dynamics - weather, clouds, airflow
- Electrical dynamics - electricity flow through circuits
- Climate dynamics
- Crowd dynamics
- Population dynamics - population variation over time
- Financial dynamics
- Group dynamics - animal or social groups forming and accomplishing tasks
- Social dynamics - conflicts and cooperation over time
Dynamics develops quantitative descriptions of changing systems.
Dynamic systems theory is a vocabulary and branch of math that describes systems changing over time.