Writings vs Song of Solomon

Writings and Song of Solomon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Writings	Yes	No	No	No
Song of Solomon	Yes	No	No	No

Writings (noun)	Song of Solomon (noun)
the third of three divisions of the Hebrew Scriptures	an Old Testament book consisting of a collection of love poems traditionally attributed to Solomon but actually written much later