glottochronology vs chronology

glottochronology and chronology both are nouns.

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

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

glottochronology: the determination of how long ago different languages evolved from a common source language
chronology: the determination of the actual temporal sequence of past events

glottochronology (noun)	chronology (noun)
the determination of how long ago different languages evolved from a common source language	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