Marduk vs Baal Merodach

Marduk and Baal Merodach both are nouns.

Word	Noun	Adjective	Verb	Adverb
Marduk	Yes	No	No	No
Baal Merodach	Yes	No	No	No

As nouns, Marduk and Baal Merodach are synonyms defined as:

Marduk and Baal Merodach: the chief Babylonian god; his consort was Sarpanitu

Other synonyms of Marduk include Bel-Merodach, Merodach.

Marduk (noun)	Baal Merodach (noun)
the chief Babylonian god; his consort was Sarpanitu	the chief Babylonian god; his consort was Sarpanitu