This is the 8464th most frequent Chinese word.
quick
The Chinese word for "quick" is 快 (kuài), meaning fast or swift.
In this sentence, '快速' (quick) is used as an adjective to describe a solution that is achieved or performed rapidly.
这个快速的解决方案非常有效。
This quick solution is very effective.
In this sentence, '快' (quick) is used as an adverb to describe the speed of the action of running.
他跑得很快，几乎赶上了公共汽车。
He ran quickly, almost catching the bus.
Here, '快点' (quickly) is an imperative phrase urging someone to act speedily to meet an objective.