Certainly! Here are four common units of pressure:
1. **Pascal (Pa)**: The SI unit of pressure, where 1 Pascal is equal to 1 Newton per square meter (N/m²).
2. **Bar**: A metric unit of pressure where 1 bar is equal to 100,000 Pascals or 100 kilopascals (kPa).
3. **Atmosphere (atm)**: A unit based on atmospheric pressure at sea level, where 1 atmosphere is approximately equal to 101,325 Pascals.
4. **Pound per Square Inch (psi)**: A unit of pressure used in the imperial system, where 1 psi is approximately equal to 6894.76 Pascals.
These units are commonly used in various fields such as engineering, meteorology, and everyday applications.