Light
noun
What makes it bright around here? It's the light! Now you might wonder: how is this different from 光 (ひかり)? 光 is more general, and often used specifically for sunlight. 明かり often refers to some specific source of light, like the kind that illuminates a room, so it's often used for light that comes from lamps.
あかり
Do you remember the adjective 明るい (あかるい), meaning "bright"? As you can see, these words are quite similar! You just need to remember that the か in 明かり isn't part of the kanji, like in 明るい.
ここからは町の明かりが見える。
You can see the city's lights from here.
この辺は明かりが少ない。
There's not much light around here.
今日は月の明かりだけで、キャンプができそうです。
It seems like we can camp with only the moonlight today.