Scripture vs Good Book

Scripture and Good Book both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scripture	Yes	No	No	No
Good Book	Yes	No	No	No

As nouns, Scripture and Good Book are synonyms defined as:

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

Scripture (noun)	Good Book (noun)
the sacred writings of the Christian religions	the sacred writings of the Christian religions