A person with the highest authority in an organization or institution.

A sum of money or asset that is invested or loaned.

एक धनराशि या संपत्ति जो निवेशित या उधार ली जाती है।

English Usage: The principal amount of the loan must be repaid with interest.

Hindi Usage: ऋण की मूल राशि ब्याज के साथ चुकानी होती है।

A substance that increases the rate of a chemical reaction.

A person or thing that causes something to happen or operate.

एक व्यक्ति या चीज जो कुछ होने या काम करने का कारण बनती है।

English Usage: She was the activator of positive change in her community.

Hindi Usage: वह अपने समुदाय में सकारात्मक बदलाव की सक्रियक थी।

The primary or most important.

प्राथमिक या सबसे महत्वपूर्ण।

English Usage: His principal concern was the well-being of his family.

Hindi Usage: उसकी मुख्य चिंता उसके परिवार की भलाई थी।