一下 is used to describe verb, 看一下，almost means do sth quickly or easily, literally means once. 一点 is describe noun. To some extent, they both have negtive meaning.

大家好，我是新学汉语。 ===大家好，我是学汉语的新生or我刚开始学习汉语 一下：one time，in a short while，all of a sudden 例： 我查一下这个生词的意思。I look up the meaning of the new words. 天一下子就黑了。Day was suddenly dark. 我试一下这件衣服。I try this dress. 一点：a little;a bit 例： 请给我一点时间，我要想想。Please give me some time, I would like to think. 这个游戏有一点危险。This game was a suspicion of danger.

一下 = duration 一点 = quality

I'm wrong, 一点 can be used in many ways. 他有点饿了 describe adj. 她有点喜欢这个故事 describe verb. Maybe I can say it in this way: he is kind of hungry,他有点饿了 But I don't know if I can say: he is a little bit hungry.

I'm wrong, 一点 can be used in many ways. 他有点饿了 describe adj. 她有点喜欢这个故事 describe verb. Maybe I can say it in this way: he is kind of hungry,他有点饿了 But I don't know if I can say: he is a little bit hungry.