commercial law vs mercantile law

commercial law and mercantile law both are nouns.

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

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

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

Other synonyms of commercial law include law merchant.

commercial law (noun)	mercantile 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