verb, directional, expression, noun, particle, adverb, punctuation · to change, transform, or become different in nature, state, or appearance

几年不见，他的样子变了。

verb · to undergo a supernatural transformation or change of form (common in mythological contexts).

孙悟空能够七十二变。

verb, noun · a rebellion, uprising, or sudden political change or disaster

一旦京城有变，你一定要立刻护送王妃离开。