aloofness vs indifference

aloofness and indifference both are nouns.

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

As nouns, indifference is a hypernym of aloofness; that is, indifference is a word with a broader meaning than aloofness:

aloofness (noun)	indifference (noun)
a disposition to be distant and unsympathetic in manner	the trait of lacking enthusiasm for or interest in things generally
indifference by personal withdrawal	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