initiatory vs initiative

initiatory is not a noun while initiative is a noun.

Word	Noun	Adjective	Verb	Adverb
initiatory	No	Yes	No	No
initiative	Yes	Yes	No	No

As adjectives, initiatory and initiative are synonyms defined as:

Other synonyms of initiatory include first, inaugural, maiden.

initiatory (noun)	initiative (noun)
	the first of a series of actions
	readiness to embark on bold new ventures

initiatory (adjective)	initiative (adjective)
serving to set in motion	serving to set in motion