Refers to light as illumination, such as from a lamp, the sun, or a device. Common in compound words like ライトアップ.
Please turn on the light in the room.
I lit up my feet with my smartphone's light.
Describes something that is light in color, taste, texture, or tone. Used for food, drinks, colors, and entertainment. Often appears as a na-adjective.
This cake has a light sweetness and is easy to eat.
I like clothes in light colors.
His stories are always light and easy to listen to.
It got dark, so I turned on the light in the room.
Let's talk about something light today.
Please turn off the light before going to sleep.
This beer has a light taste and is easy to drink.
moonlight
penlight
searchlight
taillight; tail lamp; rear light
light green
copyright
limelight
lightweight (weight class)
air right
key light
sunlight
light canned tuna
light van
light pen
laterite
underwater light; dive light
upright