Do certain words or thoughts have the power to wake us up?

I don’t know. But I have often noticed that when I am dreaming, certain words or thoughts, when I have them in the dream, suddenly bring me out of the dream and wakes me up. I don’t know if it is dream specific, if it is a one time event (since I don’t remember all my dreams), or if there are specific words which will always wake me up. This morning, the word was redemption. I don’t remember how that word came across in the dream, but I remember thinking the word, then finding myself awake thinking of the word. If dreams have the power to tell us something, what about the words which are used to wake us up?