On Simchat Torah, a special formula is used to call up the Chatan Torah, the person who gets the final aliyah. In this formula, it says "עמוד רבי (פלוני) חתן התורה" a few times.
The question: Why do we say רבי if he doesn't necessarily have semicha (Rabbinical ordination)? And if we give him the honor due to a Rabbi even if he isn't one, why do we not use the regular term הרב?
I am aware that this is a poetic work.