fungi

This term refers to a diverse kingdom of organisms including mushrooms, yeasts, and molds. In common parlance, it is often used interchangeably with mushrooms, but scientifically it encompasses a much broader biological category.

Grammatically, "fungi" is the plural form of "fungus." While "fungi" is the standard plural in scientific and formal contexts, the form "funguses" is occasionally encountered in casual speech, though it is generally avoided in academic writing.