distance vs light time

distance and light time both are nouns.

Word	Noun	Adjective	Verb	Adverb
distance	Yes	No	Yes	No
light time	Yes	No	No	No

As nouns, light time is a hyponym of distance; that is, light time is a word with a more specific, narrower meaning than distance:

distance: size of the gap between two places
light time: distance measured in terms of the speed of light (or radio waves)

Other hyponyms of distance include leg, arm's length, gauge, skip distance, wingspan, wingspread, wingspread, altitude.

distance (noun)	light time (noun)
the property created by the space between two objects or points	distance measured in terms of the speed of light (or radio waves)
size of the gap between two places
indifference by personal withdrawal
a distant region
the interval between two times
a remote point in time

distance (verb)	light time (verb)
go far ahead of
keep at a distance