emissary

As nouns the difference between ambassador and emissary

is that ambassador is a minister of the highest rank sent to a foreign court to represent there his sovereign or country. (Sometimes called ambassador-in-residence while emissary is an agent sent on a mission to represent the interests of someone else.

As nouns the difference between emisary and emissary

is that emisary is while emissary is an agent sent on a mission to represent the interests of someone else.

As nouns the difference between messenger and emissary

is that messenger is one who brings messages while emissary is an agent sent on a mission to represent the interests of someone else.

As a verb messenger

is to send something by messenger.

As nouns the difference between emissary and emissaryship

is that emissary is an agent sent on a mission to represent the interests of someone else while emissaryship is the status or office of an emissary.