the principal person in charge of a department or organization

a primary subject or focus of discussion or consideration

चर्चा या विचार का प्राथमिक विषय

English Usage: The main head of the debate revolved around climate change.

Hindi Usage: बहस का मुख्य विषय जलवायु परिवर्तन के चारों ओर घूमता था।

most important or principal

सबसे महत्वपूर्ण या प्रधान

English Usage: The main head issues were addressed in the meeting.

Hindi Usage: बैठक में प्रमुख मुद्दों पर चर्चा की गई।