Holy Scripture vs Holy Writ

Holy Scripture and Holy Writ both are nouns.

Word	Noun	Adjective	Verb	Adverb
Holy Scripture	Yes	No	No	No
Holy Writ	Yes	No	No	No

As nouns, Holy Scripture and Holy Writ are synonyms defined as:

Holy Scripture and Holy Writ: the sacred writings of the Christian religions

Other synonyms of Holy Scripture include Bible, Book, Christian Bible, Good Book, Scripture, Word, Word of God.

Holy Scripture (noun)	Holy Writ (noun)
the sacred writings of the Christian religions	the sacred writings of the Christian religions