immediate vs immediacy

immediate is not a noun while immediacy is a noun.

Word	Noun	Adjective	Verb	Adverb
immediate	No	Yes	No	No
immediacy	Yes	No	No	No

immediate (noun)	immediacy (noun)
	the quickness of action or occurrence
	lack of an intervening or mediating agency
	immediate intuitive awareness

immediate (adjective)	immediacy (adjective)
having no intervening medium
very close or connected in space or time
performed with little or no delay
of the present time and place
immediately before or after as in a chain of cause and effect