expiation vs amends

expiation and amends both are nouns.

Word	Noun	Adjective	Verb	Adverb
expiation	Yes	No	No	No
amends	Yes	No	No	No

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

expiation: the act of atoning for sin or wrongdoing (especially appeasing a deity)
amends: something done or paid in expiation of a wrong

Other hyponyms of expiation include reparation.

As nouns, amends is a hypernym of expiation; that is, amends is a word with a broader meaning than expiation:

Other hypernyms of expiation include damages, indemnification, indemnity, redress, restitution.

expiation (noun)	amends (noun)
the act of atoning for sin or wrongdoing (especially appeasing a deity)	something done or paid in expiation of a wrong
compensation for a wrong	a sum of money paid in compensation for loss or injury