duration vs clocking

duration and clocking both are nouns.

Word	Noun	Adjective	Verb	Adverb
duration	Yes	No	No	No
clocking	Yes	No	No	No

As nouns, clocking is a hyponym of duration; that is, clocking is a word with a more specific, narrower meaning than duration:

Other hyponyms of duration include longueur, residence time, span, stint, stretch, time scale, note value, time value, value, rule.

duration (noun)	clocking (noun)
continuance in time	the time taken to traverse a measured course
the property of enduring or continuing in time
the period of time during which something continues