light vs return

light and return both are nouns.

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

As verbs, return is a hypernym of light; that is, return is a word with a broader meaning than light:

Other hypernyms of light include devolve, fall, pass.

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

light (adjective)	return (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

light (verb)	return (verb)
introduce light into	go back to a previous state
start or maintain a fire in	be restored
begin to smoke	go back to something earlier
to come to rest, settle	answer back
alight from (a horse)	submit (a report, etc.) to someone in authority
fall to somebody by assignment or lot; passed	pass down
cause to start burning; subject to fire or great heat	make a return
	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

light (adverb)	return (adverb)
with few burdens