old vs oldness

old and oldness both are nouns.

Word	Noun	Adjective	Verb	Adverb
old	Yes	Yes	No	No
oldness	Yes	No	No	No

old (noun)	oldness (noun)
past times	the quality of being old; the opposite of newness
	the opposite of youngness

old (adjective)	oldness (adjective)
of long duration; not new
(used especially of persons) having lived for a relatively long time or attained a specific age
skilled through long experience
(used for emphasis) very familiar
excellent
just preceding something else in time or order
belonging to some prior time