To promise or say something with confidence to reassure someone.

To guarantee or confirm something.

आश्वस्त करना

English Usage: I assure you that the project will be completed on time.

Hindi Usage: मैं आपको आश्वस्त करता हूं कि यह परियोजना समय पर पूरी होगी।

A positive declaration intended to give confidence; a pledge.

आश्वासन

English Usage: The manager provided assurance that the company would support its employees.

Hindi Usage: प्रबंधक ने आश्वासन दिया कि कंपनी अपने कर्मचारियों का समर्थन करेगी।