Something that is required or compulsory.

An authoritative command or order.

आदेश

English Usage: The government issued a mandatory kill order for certain invasive species.

Hindi Usage: सरकार ने कुछ आक्रामक प्रजातियों के लिए अनिवार्य हत्या का आदेश जारी किया।

To cause the death of a living being.

To put an end to something.

ख़त्म करना

English Usage: The project was killed due to lack of funding.

Hindi Usage: अनुदान की कमी के कारण परियोजना को ख़त्म कर दिया गया।