diversionary vs diversion

diversionary is not a noun while diversion is a noun.

Word	Noun	Adjective	Verb	Adverb
diversionary	No	Yes	No	No
diversion	Yes	No	No	No

diversionary (noun)	diversion (noun)
	an activity that diverts or amuses or stimulates
	a turning aside (of your course or attention or concern)
	an attack calculated to draw enemy defense away from the point of the principal attack

diversionary (adjective)	diversion (adjective)
(of tactics e.g.) likely or designed to confuse or deceive