| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | overhead projector | Europe | Commonly used in classrooms and presentations before the widespread use of digital projectors. | 1 |
| 2 | projector | Europe | Commonly used for presentations in business meetings and conferences | 1 |
| 3 | projector | Europe | Commonly used in schools and offices for presentations and lectures. | 1 |
| 4 | slide projector | Europe | Commonly used in educational and business presentations before the advent of digital projectors | 1 |