Closed
Part of speech: verb
Definition: (physical) To remove a gap.
Part of speech: adjective
Definition: Sealed, made inaccessible or impassable; not open Not operating or conducting trade Non public (as in closed source) Having an open complement. Such that its image under the specified operation is contained in it. Lacking a free variable.
Example sentence: When one door is closed, don't you know, another is open.
Shut
Part of speech: noun
Definition: A narrow alley or passage acting as a short cut through the buildings between two streets.
Part of speech: verb
Definition: To close, to stop from being open.To close, to stop being open.To close a business temporarily, or (of a business) to be closed.
Example sentence: It's good to shut up sometimes.