Do you say, "preposition phrase" or "prepositional phrase"?

If both are possible, do they mean the same thing?

If not, would you please give me a couple of examples of each of them?

Thank you.

teal limeDo you say, "preposition phrase" or "prepositional phrase"?

I think I use both.

Traditional grammar uses "prepositional".
Modern grammar uses "preposition".

If I remember that when I'm posting, I use the one or the other depending on whether I'm answering from the point of view of traditional grammar or modern grammar. To know that, I take cues from the student's question.