timelessness vs agelessness

timelessness and agelessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
timelessness	Yes	No	No	No
agelessness	Yes	No	No	No

As nouns, agelessness is a hypernym of timelessness; that is, agelessness is a word with a broader meaning than timelessness:

timelessness: The property of not being restricted to a particular time or date.
agelessness: the quality of being timeless and eternal

timelessness (noun)	agelessness (noun)
The property of not being restricted to a particular time or date.	the quality of being timeless and eternal
a state of eternal existence believed in some religions to characterize the afterlife