Why is loitering a noun?

"Loitering" is actually a verb, not a noun. It describes the action of standing or waiting around idly, often in a public place.

Here's how it works:

* Verb: Loitering (to loiter)

* Noun: Loiterer (the person who loiters)

So, while "loitering" itself is an action, the noun form "loiterer" refers to the person performing that action.