decrepitude vs eld

decrepitude and eld both are nouns.

Word	Noun	Adjective	Verb	Adverb
decrepitude	Yes	No	No	No
eld	Yes	No	No	No

As nouns, eld is a hypernym of decrepitude; that is, eld is a word with a broader meaning than decrepitude:

decrepitude: The quality or state of being wasted and weakened by or as if by the infirmities of old age.
eld: a late time of life

Other hypernyms of decrepitude include age, geezerhood, old age, years.

decrepitude (noun)	eld (noun)
a state of deterioration due to old age or long use	a late time of life
The quality or state of being wasted and weakened by or as if by the infirmities of old age.	a time of life (usually defined in years) at which some particular qualification or power arises