I would love to have this honor and post the very first question in the verbal section of this platform. 
What’s the difference between “Anything but” and “Nothing but” in finding support and contrast?
Can “Nothing but” also be used for contrast or is that only for indicating support?
https://english.stackexchange.com/questions/8061/what-is-the-difference-between-nothing-but-anything-but-and-everything-bu I guess this will help
To put it simply,
Anything but X = not at all X.
It is anything but X = It can be anything in the world just not X.
For ex. : He is anything but dishonest. = He is not all dishonest.
Nothing but X = completely X.
It is nothing but X = It can be nothing in the world apart from X.
For ex: He is nothing but honest. = He is only honest.
Hope this helps. 
Wow you guys are already using the forum. Thanks for participating!
What about this : Analysts project that the pharmaceutical company’s stock price will (i)__________as the “promising” new drug’s effects have turned out to be largely (ii)__________but benign. ?
What could the second blank mean here? positive? negative? neutral?
Options for first are - dally , wane , promulgate
Options for second blank - noisome, antiseptic, nugatory
Unfortunately, that is not the correct answer.
Correct answer is wane (to decrease) and nugatory (worthless)
On basis of which I understand that largely nugatory but benign means something like though it was a worthless drug but it was still harmless
-> Worthless but harmless
May be another example would be
I was very late for the meeting but not too late to miss it altogether.
His advice was largely useless but harmless
Does it make sense?