Traditional Culture Encyclopedia - Photography major - What are the words for darkness?

What are the words for darkness?

There are five words to express shame:

1, dark things: refers to shameful things.

2. Darkroom: Doing a shameful thing in the dark.

3, darkroom selfishness: refers to doing something shameful in the dark.

4, ulterior: can not tell others. I can't see the light.

5, dark room does not bully: in places where no one sees, do not do shameful things.