/æmˈbæsədə/ – Noun
Definition: đại sứ, sứ giả, phái viên.
A more throughout explanation: An ambassador is a diplomatic official of the highest rank appointed and accredited as a representative in a foreign country or international organization, typically by a sovereign state or government. Ambassadors serve as the official representative of their sending country and are responsible for representing and promoting their country’s interests, negotiating agreements, and maintaining diplomatic relations with the host country or organization.
Example: The ambassador presented the official documents to the foreign government.