Kingdom (noun)

1. A country ruled by a king or queen.
2. A realm or sphere of influence or control.
3. A group of organisms ranking above a phylum and below an empire and including one or more classes.
4. A category in the classification of organisms, including a single major group, typically based on characteristics such as common ancestry, morphology, or biochemistry.

Origin:

Middle english: from old english cyningdōm, from cyning 'king' + dōm 'judgment'.

Examples:

1. The kingdom was ruled by a wise and just king.
2. The kingdom of God is not of this world.
3. The animal kingdom is made up of many different species.
4. The plant kingdom is a rich and diverse group of organisms.
5. The kingdom was renowned for its beauty and wealth.