In English, "王冠" is called a "crown." The word "crown" comes from the Old French word "corone," which in turn comes from the Latin word "corona," which means "wreath" or "garland." Here are some example sentences in English and their translations in Chinese:

The king wore a golden crown on his head.

国王头上戴着一顶金色的王冠。

The princess was given a crown of flowers at her coronation.

王妃在加冕典礼上收到了一顶花冠。

The winner of the competition was awarded a crown of victory.

比赛的获胜者被授予了一顶胜利王冠。