Horological vs. Horology — What's the Difference?

Of or relating to horology or a horologe.

Horology (lit. 'the study of time'; related to Latin horologium; from Ancient Greek ὡρολόγιον (hōrológion) 'instrument for telling the hour'; from ὥρα (hṓra) 'hour, time', interfix -o-, and suffix -logy) is the study of the measurement of time. Clocks, watches, clockwork, sundials, hourglasses, clepsydras, timers, time recorders, marine chronometers, and atomic clocks are all examples of instruments used to measure time.

Of or relating to horology.

The science of measuring time.

Relating to a horologe, or to horology.

The art of making timepieces.

The study of time, and the art, science and technology of timekeeping and timekeepers (such as clocks, watches and sundials).

(Christianity) The office-book of the Greek Church for the canonical hours.

The science of measuring time, or the principles and art of constructing instruments for measuring and indicating portions of time, as clocks, watches, dials, etc.

The art of designing and making clocks