What are the collocation words?

A collocation is a group of two or more words that are almost always put together to create a specific meaning. Using a different combination of words sounds unnatural or awkward. Some common collocations are: to make a mistake, but not to do a mistake.

What type of noun is benefit?

[countable] an event such as a performance, a dinner, etc., organized in order to raise money for a particular person or charity a benefit game/concert The proceeds from the benefit will go directly to the refugee camps.