ノブを回して、ドアをあけなさい。

knob; doorknob

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to turn; to rotate; to gyrate; to circulate; to send around; to surround; to put something to a new use (e.g. leftovers); ... around (e.g. to chase someone around); to dial (e.g. telephone number); to invest; to gang-rape

door (Western-style)

to open (a door, etc.); to unwrap (e.g. parcel, package); to unlock; to open (for business, etc.); to empty; to remove; to make space; to make room; to move out; to clear out; to be away from (e.g. one's house); to leave (temporarily); to dawn; to grow light; to end (of a period, season); to begin (of the New Year); to leave (one's schedule) open; to make time (for); to make (a hole); to open up (a hole)

to do