chronological vs chronology

chronological is not a noun while chronology is a noun.

Word	Noun	Adjective	Verb	Adverb
chronological	No	Yes	No	No
chronology	Yes	No	No	No

chronological (noun)	chronology (noun)
	the determination of the actual temporal sequence of past events
	a record of events in the order of their occurrence
	an arrangement of events in time

chronological (adjective)	chronology (adjective)
relating to or arranged according to temporal order