1. Dealt with on your other thread. Please don't keep re-posting the same questions.
2. not much difference. they just collocate better in different circumstances.
3. Why are you asking this question again? It was answered for you here [post]242637[/post]
4.
1) quasi：Your sister and you look quasi. No, unless you are aware of some place that uses 'quasi' in this way as probably teenage slang, but I haven't heard it.
2) kvetch (complain): Don’t kvetch her. No. You could kvetch about her but be aware that this is not an English word. I believe it is Hebrew/Yiddish and used as slang in American English but you may sound daft using it if you are not Jewish. I had to look up the meaning as it is not known in British English.
3) exemplify: Can you exemplify to me that how to drive the car. no.
4) prose: Everything that is not poetry, is prose. ok.
5) correspond (to relate to): This detail correspond to the suspect in this case. corresponds
6) mandatory (required): Study is mandatory to everyone. mandatory for everyone
7) monograph (an essay on a specific, limited, single subject): You need to write a monograph essay. monographic essay
8) malevolent:You are malevolent to do all these things. yes grammatically..but doesn't sound quite natural. I can't imagine anyone actually saying it.
9) benevolent: How benevolent the lady is! as above
10) Refer to (to mention): This story refers to a social problem. ok.