Yeast is a type of fungus. Fungi are a diverse group of organisms that include yeasts, molds, and mushrooms. While yeasts are single-celled fungi, molds and mushrooms are multicellular.
Yeast is commonly used in baking and brewing because of its ability to ferment sugars into alcohol and carbon dioxide. They are also used in the production of other food products such as cheese and yogurt.
Other types of fungi, such as molds, are used in the production of antibiotics and enzymes used in the food industry. Some molds can also cause food spoilage, and some species can cause infections in humans and animals.
Overall, while yeast is a specific type of fungus, the term “fungus” encompasses a much broader range of organisms with varying characteristics and uses.