How is mold different from mildew?

Mildew is indeed a type of mold, but it typically refers to specific types of mold that grow in damp, warm environments and appear as powdery or fluffy textures, often white or gray. The distinction lies in the fact that "mold" serves as an umbrella term for various fungi, many of which can be harmful, whereas "mildew" is often used informally to describe a certain appearance or condition of mold, particularly in indoor settings. Recognizing this hierarchical relationship helps in understanding how molds function in different environments; for instance, while all mildew is mold, not all mold qualifies as mildew. This classification highlights how molds are diverse in terms of species, appearance, and effects on health and materials.