Scripture vs Book

Scripture and Book both are nouns.

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

As nouns, Scripture and Book are synonyms defined as:

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

Scripture (noun)	Book (noun)
the sacred writings of the Christian religions	the sacred writings of the Christian religions
	the sacred writings of Islam revealed by God to the prophet Muhammad during his life at Mecca and Medina