Habakkuk vs Old Testament

Habakkuk and Old Testament both are nouns.

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

Habakkuk (noun)	Old Testament (noun)
an Old Testament book telling Habakkuk's prophecies	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 who wrote the book of Habakkuk, which consists of five oracles about the Chaldeans