mitigatory vs palliative

mitigatory is not a noun while palliative is a noun.

Word	Noun	Adjective	Verb	Adverb
mitigatory	No	Yes	No	No
palliative	Yes	Yes	No	No

As adjectives, mitigatory and palliative are synonyms defined as:

mitigatory and palliative: moderating pain or sorrow by making it easier to bear

Other synonyms of mitigatory include alleviative, alleviatory, lenitive, mitigative.

mitigatory (noun)	palliative (noun)
	remedy that alleviates pain without curing

mitigatory (adjective)	palliative (adjective)
moderating pain or sorrow by making it easier to bear	moderating pain or sorrow by making it easier to bear