noble vs titled

noble is a noun but titled is not a noun.

Word	Noun	Adjective	Verb	Adverb
noble	Yes	Yes	No	No
titled	No	Yes	No	No

noble (noun)	titled (noun)
a titled peer of the realm

noble (adjective)	titled (adjective)
having or showing or indicative of high or elevated character	belonging to the peerage
of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
impressive in size, manner, or appearance
inert especially toward oxygen