mercantile law vs commercial law

mercantile law and commercial law both are nouns.

Word	Noun	Adjective	Verb	Adverb
mercantile law	Yes	No	No	No
commercial law	Yes	No	No	No

As nouns, mercantile law and commercial law are synonyms defined as:

mercantile law and commercial law: the body of rules applied to commercial transactions; derived from the practices of traders rather than from jurisprudence

Other synonyms of mercantile law include law merchant.

mercantile law (noun)	commercial law (noun)
the body of rules applied to commercial transactions; derived from the practices of traders rather than from jurisprudence	the body of rules applied to commercial transactions; derived from the practices of traders rather than from jurisprudence