A mark or character used to represent something.

A person or thing that represents something else.

प्रतीक

English Usage: In mathematics, the plus sign (+) is a symbol of addition.

Hindi Usage: गणित में, प्लस चिह्न (+) जोड़ का प्रतीक है।

An emblem or token.

चिन्ह

English Usage: The flag served as a symbol of the country's independence.

Hindi Usage: झंडा देश की स्वतंत्रता का चिन्ह था।