Coal (a combustible black or dark brown rock consisting chiefly of carbon and used as fuel)

Charcoal (a lightweight black carbon residue produced by removing water and other volatile constituents from plant materials)

कोयला

English Usage: The factory relies on charbon for its energy needs.

Hindi Usage: फैक्ट्री अपनी ऊर्जा आवश्यकताओं के लिए कोयले पर निर्भर करती है.

Charbon (in the context of a disease, it refers to anthrax; related to historical uses)

काली खाँसी

English Usage: The outbreak of charbon caused alarm in the rural communities.

Hindi Usage: चार्बन का प्रकोप ग्रामीण समुदायों में चिंता का कारण बन गया.