chronology vs written account

chronology and written account both are nouns.

Word	Noun	Adjective	Verb	Adverb
chronology	Yes	No	No	No
written account	Yes	No	No	No

As nouns, written account is a hypernym of chronology; that is, written account is a word with a broader meaning than chronology:

Other hypernyms of chronology include written record.

chronology (noun)	written account (noun)
the determination of the actual temporal sequence of past events	a written document preserving knowledge of facts or events
a record of events in the order of their occurrence
an arrangement of events in time