How can I use the word example as an adjective?

Question

How can I use the word "example" as an adjective? I want to say something like "Give 5 example words for the letter B".

Is that Ok to use it that way or I have to change something here (because it <=the word "example"> is a noun that can be also plural)?

Answer 1

You can use example this way that you used. It's called a noun adjunct - and it's likely the most common and idiomatic way to express what you want.