Terumos Chapter One

In the evenings after Maariv, we try to learn one perek of Mishnayos. Yesterday we began Masechta Terumos.

Some immediate stray thoughts I had:
The first chapter is telling us that the actual act of hafrasha, separating the terumah from the rest of the produce, is a mitzvah all on its own. I might have thought that giving the food to the Cohen was the meaningful act and that separating the food was merely something that obviously needs to be done before giving the gift. But that is not the case. Terumah means "lifting", hence the awkward archaic English rendering of the word as "Heave Offering". Heave nowadays is a colloquialism for vomiting, but it means to lift upward. Terumah is the act of making something "Ram", elevated.

If Terumah is the act of lifting, then the verb should be "Leharim". Yet it seems that the verb in Mishnaic Hebrew is "Litrom", an invented word. This is one of my sources for the concept that Loshon Kodesh evolved from Biblical times to Talmudic times.