Nouns
Do you like tea or coffee?
What is or
What is the conjunction in the sentence? Larry was absent from school, but he had a good reason.
What is but
Since he's lost his money, he couldn't go to the restaurant.
What is since
Her baby cannot fall asleep unless she stays in the room.
What is unless
As you couldn't see the film, we'll tell you something about it.
What is as