Definitions of nature:

• noun:   the complex of emotional and intellectual attributes that determine a person's characteristic actions and reactions

  Example: "It is his nature to help others"

• noun:   the essential qualities or characteristics by which something is recognized

  Example: "It is the nature of fire to burn"

• noun:   a particular type of thing

  Example: "He's interested in trains and things of that nature"

• noun:   the natural physical world including plants and animals and landscapes etc.

  Example: "They tried to preserve nature as they found it"

• noun:   a causal agent creating and controlling things in the universe

  Example: "The laws of nature"