This is the 4673rd most frequent Chinese word.
王国
Kingdom.
In this context, 王国 means 'kingdom', referring to a fantastical or fictional realm.
在这片神秘的王国里，所有动物都能说话。
In this mysterious kingdom, all animals can talk.
Here, 王国 refers to a nation or state governed by a monarchy.
英国曾经是一个强大的王国。
The United Kingdom used to be a powerful kingdom.
In this sentence, 王国 is used metaphorically to describe someone's inner world or personal space as a kingdom.