agedness vs senescence

agedness and senescence both are nouns.

Word	Noun	Adjective	Verb	Adverb
agedness	Yes	No	No	No
senescence	Yes	No	No	No

As nouns, agedness and senescence are synonyms defined as:

agedness (noun)	senescence (noun)
the property characteristic of old age	the property characteristic of old age
	the organic process of growing older and showing the effects of increasing age