To bring something to an end or to finish.

समाप्त करना

English Usage: We will conclude the meeting by 5 PM.

Hindi Usage: हम बैठक को 5 बजे समाप्त करेंगे।

The act of bringing something to an end.

समाप्ति

English Usage: Concluding the presentation took longer than expected.

Hindi Usage: प्रस्तुति को समाप्त करना अपेक्षा से अधिक समय लगा।

The end or finish of an event, process, or text.

निष्कर्ष

English Usage: The conclusion of the story was surprising.

Hindi Usage: कहानी का निष्कर्ष आश्चर्यजनक था।