eld vs senility

eld and senility both are nouns.

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

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

eld: a late time of life
senility: mental infirmity as a consequence of old age; sometimes shown by foolish infatuations

Other hyponyms of eld include dotage, second childhood, autumn years, decrepitude.

eld (noun)	senility (noun)
a late time of life	the state of being senile
a time of life (usually defined in years) at which some particular qualification or power arises	mental infirmity as a consequence of old age; sometimes shown by foolish infatuations