Ambassador
An ambassador is an official envoy, especially a high-ranking diplomat who represents a state and is usually accredited to another sovereign state or to an international organization as the resident representative of their own government or sovereign or appointed for a special and often temporary diplomatic assignment. The word is also used informally for people who are known, without national appointment, to represent certain professions, activities and fields of endeavor such as sales.
An ambassador is the ranking government representative stationed in a foreign capital or country. The host country typically allows the ambassador control of specific territory called an embassy, whose territory, staff, and vehicles are generally afforded diplomatic immunity in the host country. Under the Vienna Convention on Diplomatic Relations, an ambassador has the highest diplomatic rank. Countries may choose to maintain diplomatic relations at a lower level by appointing a chargé d'affaires in place of an ambassador.
大使
大使是官方特使，尤其是代表一个国家的高级外交官，通常被派往另一个主权国家或国际组织，作为其本国政府或主权国家的常驻代表，或被任命执行特殊且通常是临时的外交任务.这个词也被非正式地用于那些在没有国家任命的情况下代表某些职业、活动和努力领域（如销售）的人。
大使是驻在外国首都或国家的高级政府代表。东道国通常允许大使控制称为大使馆的特定领土，其领土、工作人员和车辆通常在东道国享有外交豁免权。根据《维也纳外交关系公约》，大使具有最高外交级别。各国可以选择通过任命代办代替大使来维持较低级别的外交关系。
