Abdias vs Old Testament

Abdias and Old Testament both are nouns.

Word	Noun	Adjective	Verb	Adverb
Abdias	Yes	No	No	No
Old Testament	Yes	No	No	No

Abdias (noun)	Old Testament (noun)
an Old Testament book telling Obadiah's prophecies; the shortest book in the Christian Bible	the collection of books comprising the sacred scripture of the Hebrews and recording their history as the chosen people; the first half of the Christian Bible
a Hebrew minor prophet, he was chosen to prophesy against Edom