The act of finishing or concluding something.

समाप्ति

English Usage: The closing of the store happens at 9 PM.

Hindi Usage: दुकान की समाप्ति रात 9 बजे होती है.

To bring something to an end or to shut.

बंद करना

English Usage: She is closing the door quietly.

Hindi Usage: वह धीरे से दरवाजा बंद कर रही है.