Common is an adjective.
From is a preposition of movement. I went from Hong Kong to Tokyo.
may, might, will, would, shall, should, can, could, does, do, did, had, has, have, was, were, been, be, am, is, are.
Adjectives, Nouns, and Verbs are all parts of speech. So, the one thing that they have in common is that they're parts of speech.
"Coarse" is neither a common noun nor an action verb; it is an adjective. Its homonym, "course", however, can be either a common noun or an action verb. Usage as a noun is considerably more common.