rubric vs rubricate

rubric is a noun but rubricate is not a noun.

Word	Noun	Adjective	Verb	Adverb
rubric	Yes	No	Yes	No
rubricate	No	No	Yes	No

rubric (noun)	rubricate (noun)
category name
a title or heading that is printed in red or in a special type
an explanation or definition of an obscure word in a text
an authoritative rule of conduct or procedure
directions for the conduct of Christian church services (often printed in red in a prayer book)
a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with

rubric (verb)	rubricate (verb)
adorn with ruby red color	sign with a mark instead of a name
	decorate (manuscripts) with letters painted red
	furnish with rubrics or regulate by rubrics
	place in the church calendar as a red-letter day honoring a saint