parliamentary law vs parliamentary procedure

parliamentary law and parliamentary procedure both are nouns.

Word	Noun	Adjective	Verb	Adverb
parliamentary law	Yes	No	No	No
parliamentary procedure	Yes	No	No	No

As nouns, parliamentary law and parliamentary procedure are synonyms defined as:

parliamentary law and parliamentary procedure: a body of rules followed by an assembly

Other synonyms of parliamentary law include order, rules of order.

parliamentary law (noun)	parliamentary procedure (noun)
a body of rules followed by an assembly	a body of rules followed by an assembly