Zoology
Part of speech: noun
Definition: that part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct. a treatise on this science.
Example sentence: The selfsame procedure which zoology, a branch of the natural sciences, applies to the study of animals, anthropology must apply to the study of man; and by doing so, it enrolls itself as a science in the field of nature.
Fauna
Part of speech: noun
Definition: animals considered as a group; especially those of a particular country, region, time, etc.a book, cataloguing the animals of a country etc.