decompressing vs easing

decompressing and easing both are nouns.

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

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

decompressing: relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)
easing: the act of reducing something unpleasant (as pain or annoyance)

Other hypernyms of decompressing include alleviation, easement, relief.

decompressing (noun)	easing (noun)
relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)	the act of reducing something unpleasant (as pain or annoyance)
	a change for the better