procedure vs procedural

procedure is a noun but procedural is not a noun.

Word	Noun	Adjective	Verb	Adverb
procedure	Yes	No	No	No
procedural	No	Yes	No	No

procedure (noun)	procedural (noun)
a particular course of action intended to achieve a result
a mode of conducting legal and parliamentary proceedings
a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
a set sequence of steps, part of larger computer program

procedure (adjective)	procedural (adjective)
	relating to court practice and procedure as opposed to the principles of law
	of or relating to procedure