| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | proton | United States | Subatomic particle with a positive charge in an atom | 1 |
| 2 | protons | United States | Protons are fundamental subatomic particles with positive electric charge, found in the nucleus of atoms. | 1 |
| 3 | quark | United States | Known as a fundamental particle in particle physics, forming the building blocks of protons and neutrons. | 1 |