alleviant vs alleviator

alleviant and alleviator both are nouns.

Word	Noun	Adjective	Verb	Adverb
alleviant	Yes	No	No	No
alleviator	Yes	No	No	No

As nouns, alleviant and alleviator are synonyms defined as:

Other synonyms of alleviant include palliative.

alleviant (noun)	alleviator (noun)
remedy that alleviates pain without curing	remedy that alleviates pain without curing
	a therapist who makes suffering more endurable