propitiation vs conciliation

propitiation and conciliation both are nouns.

Word	Noun	Adjective	Verb	Adverb
propitiation	Yes	No	No	No
conciliation	Yes	No	No	No

As nouns, propitiation and conciliation are synonyms defined as:

propitiation and conciliation: the act of placating and overcoming distrust and animosity

Other synonyms of propitiation include placation.

propitiation (noun)	conciliation (noun)
the act of placating and overcoming distrust and animosity	the act of placating and overcoming distrust and animosity
the act of atoning for sin or wrongdoing (especially appeasing a deity)	any of various forms of mediation whereby disputes may be settled short of arbitration
	the state of manifesting goodwill and cooperation after being reconciled