chronology vs written record

chronology and written record both are nouns.

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

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

Other hypernyms of chronology include written account.

chronology (noun)	written record (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