mission vs embassy

mission and embassy both are nouns.

Word	Noun	Adjective	Verb	Adverb
mission	Yes	No	No	No
embassy	Yes	No	No	No

As nouns, embassy is a hyponym of mission; that is, embassy is a word with a more specific, narrower meaning than mission:

Other hyponyms of mission include diplomatic mission.

mission (noun)	embassy (noun)
a special assignment that is given to a person or group	a diplomatic building where ambassadors live or work
an operation that is assigned by a higher headquarters	an ambassador and his entourage collectively
the organized work of a religious missionary
a group of representatives or delegates
an organization of missionaries in a foreign land sent to carry on religious work