The term "roof mushroom" is commonly used to refer to the ventilation caps installed on the roofs of buildings. However, there are many synonyms for this term, such as roof cap, rooftop vent, vent hood, exhaust cap, and attic fan. These synonyms are often used interchangeably and serve the same purpose of improving the airflow in attics and protecting the roof structure from damage caused by humidity and moisture. Nevertheless, the specific type and design of roof mushroom or its synonyms might differ depending on the building's design, location, and climate, as well as the ventilation and heating systems used inside the building.