noble vs milord

noble and milord both are nouns.

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

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

noble (noun)	milord (noun)
a titled peer of the realm	a term of address for an English lord

noble (adjective)	milord (adjective)
having or showing or indicative of high or elevated character
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