nature
[ < L. nasci, be born] 1. the essential quality of a thing; essence 2. inherent tendencies of a person 3. kind; type 4. a) the entire physical universe b) [sometimes N-] the power, force, etc. that seems to regulate this 5. the primitive state of [humanity] 6. natural scenery -- by nature inherently
naturalist
n. 1. one who studies animals and plants 2. an advocate of naturalism -- naturalistic adj.
naturalism
n. 1. action or thought based on natural desires 2. Literature, Art, etc. the portrayal of people and things as they really are