A substance or mixture used in chemical reactions to detect, measure, or produce other substances.

अभिकर्ता

English Usage: The scientist added a reagent to the solution to test for acidity.

Hindi Usage: वैज्ञानिक ने अम्लता का परीक्षण करने के लिए घोल में अभिकर्ता मिलाया.

A small, spherical object used in children's games.

गेंद

English Usage: The children played with marbles in the park.

Hindi Usage: बच्चे पार्क में गेंद से खेल रहे थे.