| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ion | physics | Ions are important in plasma physics, where they play a central role in the behavior of charged particles and electromagnetic fields. | 1 |
| 2 | plasma | physics community | The fourth state of matter, along with solid, liquid, and gas, commonly found in astrophysics and fusion research. | 1 |
| 3 | plasma | physics community | Plasma is considered as one of the fundamental states of matter, along with solid, liquid, and gas. | 1 |