Parousia vs Second Coming

Parousia and Second Coming both are nouns.

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

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

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

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

Parousia (noun)	Second Coming (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