apathy vs indifference

apathy and indifference both are nouns.

Word	Noun	Adjective	Verb	Adverb
apathy	Yes	No	No	No
indifference	Yes	No	No	No

As nouns, apathy and indifference are synonyms defined as:

apathy and indifference: the trait of lacking enthusiasm for or interest in things generally

Other synonyms of apathy include numbness, spiritlessness.

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

apathy (noun)	indifference (noun)
the trait of lacking enthusiasm for or interest in things generally	the trait of lacking enthusiasm for or interest in things generally
an absence of emotion or enthusiasm	the trait of remaining calm and seeming not to care; a casual lack of concern
	unbiased impartial unconcern
	apathy demonstrated by an absence of emotional reactions