degeneration vs degeneracy

degeneration and degeneracy both are nouns.

Word	Noun	Adjective	Verb	Adverb
degeneration	Yes	No	No	No
degeneracy	Yes	No	No	No

As nouns, degeneration and degeneracy are synonyms defined as:

degeneration and degeneracy: the state of being degenerate in mental or moral qualities

Other synonyms of degeneration include decadence, decadency.

degeneration (noun)	degeneracy (noun)
passing from a more complex to a simpler biological form	moral perversion; impairment of virtue and moral principles
the process of declining from a higher to a lower level of effective power or vitality or essential quality	the state of being degenerate in mental or moral qualities
the state of being degenerate in mental or moral qualities