I have over 102 BUT ill just give you one which is "build"
The only word that could potentially be a compound noun is patents, but that has its own definition-a government meeting of some sort.
A compound noun would be a compound word that is also a noun, but there aren't really any compound words.
I know this doesn't really help, sry.
What are the answer choices?
The correct answer is C. Hope that helps :)