title vs rubric

title and rubric both are nouns.

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

As nouns, rubric is a hyponym of title; that is, rubric is a word with a more specific, narrower meaning than title:

Other hyponyms of title include masthead.

As nouns, title and rubric are synonyms defined as:

title and rubric: a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with

Other synonyms of title include statute title.

title (noun)	rubric (noun)
an established or recognized right	category name
an informal right to something	a title or heading that is printed in red or in a special type
the name of a work of art or literary composition etc.	an explanation or definition of an obscure word in a text
a general or descriptive heading for a section of a written work	an authoritative rule of conduct or procedure
an identifying appellation signifying status or function: e.g. `Mr.' or `General'	directions for the conduct of Christian church services (often printed in red in a prayer book)
an appellation signifying nobility	a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with
a legal document signed and sealed and delivered to effect a transfer of property and to show the legal right to possess it
a heading that names a statute or legislative bill; may give a brief summary of the matters it deals with
(usually plural) written material introduced into a movie or TV show to give credits or represent dialogue or explain an action
the status of being a champion

title (verb)	rubric (verb)
give a title to	adorn with ruby red color
designate by an identifying term