Word Network: 何時

early; fast

Refers to the concept of time in general or a specific duration/interval between two points. It is also used as a numerical counter for measuring 'hours' in duration.

clock, watch

時刻 (jikoku) refers to a specific, fixed point in time as shown on a clock or schedule. While often translated as 'time', it specifically denotes a precise moment (like 3:00 PM) rather than a duration of time.