return vs light

return and light both are nouns.

Word	Noun	Adjective	Verb	Adverb
return	Yes	No	Yes	No
light	Yes	Yes	Yes	Yes

As verbs, light is a hyponym of return; that is, light is a word with a more specific, narrower meaning than return:

Other hyponyms of return include fall.

return (noun)	light (noun)
the act of going back to a prior location	any device serving as a source of illumination
a coming to or returning home	a device for lighting or igniting fuel or charges or fires
getting something back again	the visual effect of illumination on objects or scenes as created in pictures
a tennis stroke that sends the ball back to the other player	the quality of being luminous; emitting or reflecting light
(American football) the act of running back the ball after a kickoff or punt or interception or fumble	merriment expressed by a brightness or gleam or animation of countenance
a reciprocal group action	mental understanding as an enlightening experience
the act of someone appearing again	a particular perspective or aspect of a situation
the key on electric typewriters or computer keyboards that causes a carriage return and a line feed	public awareness
document giving the tax collector information about the taxpayer's tax liability	a visual warning signal
a quick reply to a question or remark (especially a witty or critical one)	an illuminated area
happening again (especially at regular intervals)	a person regarded very fondly
the occurrence of a change in direction back in the opposite direction	(physics) electromagnetic radiation that can produce a visual sensation
the income or profit arising from such transactions as the sale of land or other property	having abundant light or illumination
	a condition of spiritual awareness; divine illumination

return (adjective)	light (adjective)
	of comparatively little physical weight or density
	psychologically light; especially free from sadness or troubles
	not great in degree or quantity or number
	of the military or industry; using (or being) relatively small or light arms or equipment
	(used of color) having a relatively small amount of coloring agent
	characterized by or emitting light
	(physics, chemistry) not having atomic weight greater than average
	of little intensity or power or force
	easily assimilated in the alimentary canal; not rich or heavily seasoned
	silly or trivial
	weak and likely to lose consciousness
	having little importance
	less than the correct or legal or full amount often deliberately so
	designed for ease of movement or to carry little weight
	moving easily and quickly; nimble
	(used of soil) loose and large-grained in consistency
	having relatively few calories
	(of sound or color) free from anything that dulls or dims
	(of sleep) easily disturbed
	marked by temperance in indulgence
	very thin and insubstantial
	casual and unrestrained in sexual behavior
	demanding little effort; not burdensome
	(used of vowels or syllables) pronounced with little or no stress
	intended primarily as entertainment; not serious or profound

return (verb)	light (verb)
go back to a previous state	introduce light into
be restored	start or maintain a fire in
go back to something earlier	begin to smoke
answer back	to come to rest, settle
submit (a report, etc.) to someone in authority	alight from (a horse)
pass down	fall to somebody by assignment or lot; passed
make a return	cause to start burning; subject to fire or great heat
give or supply
go or come back to place, condition, or activity where one has been before
return to a previous position; in mathematics
bring back to the point of departure
pay back
return in kind
give back
be inherited by
elect again

return (adverb)	light (adverb)
	with few burdens