Merodach vs Marduk

Merodach and Marduk both are nouns.

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

As nouns, Merodach and Marduk are synonyms defined as:

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

Other synonyms of Merodach include Baal Merodach, Bel-Merodach.

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