decrepitude vs dilapidation

decrepitude and dilapidation both are nouns.

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

As nouns, decrepitude and dilapidation are synonyms defined as:

decrepitude and dilapidation: a state of deterioration due to old age or long use

decrepitude (noun)	dilapidation (noun)
a state of deterioration due to old age or long use	the process of becoming dilapidated
The quality or state of being wasted and weakened by or as if by the infirmities of old age.	a state of deterioration due to old age or long use