Simplify the following text for a Grade 8 native English-speaking person.
Original: A fungus ( ; pl . fungi or funguses ) is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds ( British English : moulds ) , as well as the more familiar mushrooms .
Simplified: A fungus ( plural : fungi ) is a kind of living organism : yeasts , moulds and mushrooms are types of fungi .