palliation vs easing

palliation and easing both are nouns.

Word	Noun	Adjective	Verb	Adverb
palliation	Yes	No	No	No
easing	Yes	No	No	No

As nouns, easing is a hypernym of palliation; that is, easing is a word with a broader meaning than palliation:

palliation: easing the severity of a pain or a disease without removing the cause
easing: the act of reducing something unpleasant (as pain or annoyance)

Other hypernyms of palliation include alleviation, easement, relief.

palliation (noun)	easing (noun)
easing the severity of a pain or a disease without removing the cause	the act of reducing something unpleasant (as pain or annoyance)
to act in such a way as to cause an offense to seem less serious	a change for the better