Good Book vs sacred text

Good Book and sacred text both are nouns.

Word	Noun	Adjective	Verb	Adverb
Good Book	Yes	No	No	No
sacred text	Yes	No	No	No

As nouns, sacred text is a hypernym of Good Book; that is, sacred text is a word with a broader meaning than Good Book:

Other hypernyms of Good Book include religious text, religious writing, sacred writing.

Good Book (noun)	sacred text (noun)
the sacred writings of the Christian religions	writing that is venerated for the worship of a deity