opens
v.v. to move a door, window, or lid so that people or things can go through. You also use this when a shop or business starts its working day.
v. to move a barrier or cover from a closed position to allow access; to begin business operations for the day. This third-person singular form typically follows a singular subject.
The shop opens at nine every morning.
The new gallery opens its doors to the public this weekend with a special exhibition of local art.
When the curtain finally opens, the audience is greeted by a minimalist set that emphasizes the isolation of the main character.
The verb is transitive when it has an object ('opens the door') and intransitive when it describes a state or schedule ('the store opens').
The door opens itselfThe door opensIn English, many verbs like 'open' are ergative; the door can be the subject of the active verb without needing a reflexive pronoun.