Cain vs Old Testament

Cain and Old Testament both are nouns.

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

Cain (noun)	Old Testament (noun)
(Old Testament) Cain and Abel were the first children of Adam and Eve born after the Fall of Man; Cain killed Abel out of jealousy and was exiled by God	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