By definition, flora is a word of Latin origin referring to Flora, the goddess of flowers. The term can refer to a group of plants or to bacteria. Flora is the root of the word floral, which means pertaining to flowers. Fauna can refer to the animal life or classification of animals of a certain region, time period, or environment. The term is also of Latin origin, and in Roman mythology, Fauna was the sister of Faunus, a good spirit of the forest and plains. Sorry I had to do that.