Second Coming vs Parousia

Second Coming and Parousia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Second Coming	Yes	No	No	No
Parousia	Yes	No	No	No

As nouns, Second Coming and Parousia are synonyms defined as:

Second Coming and Parousia: (Christian theology) the reappearance of Jesus as judge for the Last Judgment

Other synonyms of Second Coming include Advent, Second Advent, Second Coming of Christ.

Second Coming (noun)	Parousia (noun)
(Christian theology) the reappearance of Jesus as judge for the Last Judgment	(Christian theology) the reappearance of Jesus as judge for the Last Judgment