| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | exhaust | Canada | Exhaust system on a vehicle is a crucial component for emissions control and noise reduction. | 1 |
| 2 | muffler | Canada | Mufflers are commonly used on vehicles to reduce noise and emissions. | 1 |
| 3 | muffler | Canada | Mufflers are commonly used to reduce noise pollution from vehicles and are mandatory for roadworthiness. | 1 |
| 4 | muffler | Canada | A muffler is a part of a car's exhaust system designed to reduce noise and harmful emissions. | 1 |
| 5 | muffler | Canada | Mufflers are important components of car exhaust systems to reduce noise and harmful emissions. | 1 |