chronograph vs timer

chronograph and timer both are nouns.

Word	Noun	Adjective	Verb	Adverb
chronograph	Yes	No	No	No
timer	Yes	No	No	No

As nouns, timer is a hypernym of chronograph; that is, timer is a word with a broader meaning than chronograph:

chronograph (noun)	timer (noun)
an accurate timer for recording time	a timepiece that measures a time interval and signals its end
	a regulator that activates or deactivates a mechanism at set times
	(sports) an official who keeps track of the time elapsed