envoy vs envoy extraordinary

envoy and envoy extraordinary both are nouns.

Word	Noun	Adjective	Verb	Adverb
envoy	Yes	No	No	No
envoy extraordinary	Yes	No	No	No

As nouns, envoy and envoy extraordinary are synonyms defined as:

envoy and envoy extraordinary: a diplomat having less authority than an ambassador

Other synonyms of envoy include minister plenipotentiary.

envoy (noun)	envoy extraordinary (noun)
a brief stanza concluding certain forms of poetry	a diplomat having less authority than an ambassador
a diplomat having less authority than an ambassador
someone sent on a mission to represent the interests of someone else