rules of order vs parliamentary procedure

rules of order and parliamentary procedure both are nouns.

Word	Noun	Adjective	Verb	Adverb
rules of order	Yes	No	No	No
parliamentary procedure	Yes	No	No	No

As nouns, rules of order and parliamentary procedure are synonyms defined as:

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

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

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