nature

(noun) the essential qualities or characteristics by which something is recognized. Examples: "It is the nature of fire to burn." "The true nature of jealousy."

(noun) a causal agent creating and controlling things in the universe. Examples: "The laws of nature." "Nature has seen to it that men are stronger than women."

(noun) the natural physical world including plants and animals and landscapes etc.. Example: "They tried to preserve nature as they found it."

(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) a particular type of thing. Examples: "Problems of this type are very difficult to solve." "He's interested in trains and things of that nature." "Matters of a personal nature."