Bible vs Word of God

Bible and Word of God both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bible	Yes	No	No	No
Word of God	Yes	No	No	No

As nouns, Bible and Word of God are synonyms defined as:

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

Bible (noun)	Word of God (noun)
the sacred writings of the Christian religions	the sacred writings of the Christian religions
	the message of the Gospel of Christ
	a manifestation of the mind and will of God