This is the 551st most frequent Indonesian word.
terang
Bright.
The word 'terang' is used here as an adjective describing the brightness of the light in the room.
Lampu di kamar sangat terang.
The light in the room is very bright.
In this sentence, 'terang' acts as an adjective describing the sky.
Langit yang terang membuat malam terasa indah.
The bright sky made the night feel beautiful.
The word 'terang' here functions as an adverb to describe the clarity of the explanation.