liberalisation vs alleviation

liberalisation and alleviation both are nouns.

Word	Noun	Adjective	Verb	Adverb
liberalisation	Yes	No	No	No
alleviation	Yes	No	No	No

As nouns, alleviation is a hypernym of liberalisation; that is, alleviation is a word with a broader meaning than liberalisation:

liberalisation: the act of making less strict
alleviation: the act of reducing something unpleasant (as pain or annoyance)

Other hypernyms of liberalisation include easement, easing, relief.

liberalisation (noun)	alleviation (noun)
the act of making less strict	the act of reducing something unpleasant (as pain or annoyance)
	the feeling that comes when something burdensome is removed or reduced