In diplomatic usage, head of mission (HOM) or chief of mission (COM) from the French "chef de mission diplomatique" (CMD) is the head of a diplomatic representation, such as an
ambassador
An ambassador is an official envoy, especially a high-ranking diplomat
A diplomat (from grc, δίπλωμα; romanized
Romanization or romanisation, in linguistics
Linguistics is the scientific study of language
A langua ...

,
high commissioner,
nuncio
An apostolic nuncio ( la, nuntius apostolicus; also known as a papal nuncio or simply as a nuncio) is an ecclesiastical
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