Ventilation = the movement of fresh air around a closed space or the system that does this.
- Our kitchen has poor ventilation and in summer it becomes unbearably stuffy.
- Use car ventilation system for fresh air circulation.
- Good ventilation helps to reduce indoor pollution but this is not always possible.
Aeration = the process by which air is circulated through , mixed with or dissolved in a liquid or substance.
- Aerate the soil by digging.
- Blood is aerated in the lungs.
- Aerated water.
- Earthworms help to aerate the soil.
- Aeration is used to maintain the health and vitality of the fishes.
- Aerated drinks.
- Pond owners provide artificial aeration in their ponds.