TLDR: "Apart" when objects are kept at a distance. "A part" when one is a constituent of a bigger entity.

Whisky or whiskey is a liquor produced by fermenting certain grains, and then distilling them into hard alcohol. Bourbon is an American whiskey, most notably produced in the Bourbon County area of Kentucky. All bourbon is whiskey, most whiskey isn't bourbon.

An undergraduate student is in a bachelors program or lower. A graduate student is in a masters program or higher.

When referring to minutes in a shortened form, people often wonder whether to use "min" or "mins" for the plural. Let's clarify this!

The plural form of "quiz" might seem tricky because of the way the word ends, but the rules for making it plural are quite simple once you understand them.