illustrious vs notable

illustrious is not a noun while notable is a noun.

Word	Noun	Adjective	Verb	Adverb
illustrious	No	Yes	No	No
notable	Yes	Yes	No	No

As adjectives, illustrious and notable are synonyms defined as:

Other synonyms of illustrious include celebrated, famed, famous, far-famed, noted, renowned.

illustrious (noun)	notable (noun)
	a celebrity who is an inspiration to others

illustrious (adjective)	notable (adjective)
having or conferring glory	widely known and esteemed
widely known and esteemed	worthy of attention