timekeeper vs horologe

timekeeper and horologe both are nouns.

Word	Noun	Adjective	Verb	Adverb
timekeeper	Yes	No	No	No
horologe	Yes	No	No	No

As nouns, timekeeper and horologe are synonyms defined as:

timekeeper and horologe: a measuring instrument or device for keeping time

Other synonyms of timekeeper include timepiece.

timekeeper (noun)	horologe (noun)
a measuring instrument or device for keeping time	a measuring instrument or device for keeping time
a clerk who keeps track of the hours worked by employees
(sports) an official who keeps track of the time elapsed