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"La luz" is a form of "luz", a noun which is often translated as "light". "La guerra" is a form of "guerra", a noun which is often translated as "war". Learn more about the difference between "la luz" and "la guerra" below.
la luz(
loos
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (luminosity)
a. light
La luz del farol entraba por la ventana e iluminaba el cuarto.The light from the streetlight came in through the window and illuminated the room.
2. (device)
a. light
Si enciendes la luz, podrás ver dónde estás.If you turn on the light, you'll see where you are.
3. (power)
la guerra(
geh
-
rrah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).