Substance used for medical treatment or recreational purposes.

औषधि (Aushadhi)

English Usage: The doctor prescribed a new drug for her condition.

Hindi Usage: डॉक्टर ने उसकी स्थिति के लिए एक नई औषधि लिखी।

The branch of science concerned with the substances of which matter is composed.

रसायन विज्ञान (Rasayan Vigyan)

English Usage: He studied chemistry to understand chemical reactions better.

Hindi Usage: उसने रासायन विज्ञान का अध्ययन किया ताकि वह रासायनिक प्रतिक्रियाओं को बेहतर समझ सके।