I'd like to know the difference between sue/charge/accuse/litigate/bring a suit/bring an action which I run into a lot in articles. They all can mean taking a legal action. But in Chinese we don't have as many choices of words to mean the same thing. Dictionaries help me poorly with that except for collocation. (I know some of them have other meanings, but that's not the problem here)
Can you please explain to me what the nuances are suggested between them in terms of severity, purpose, or parties involved etc?