An individual or device that checks or inspects something.

A game piece used in the game of checkers.

जाँच करने वाला

English Usage: The checker at the entrance verified our tickets.

Hindi Usage: प्रवेश पर जाँच करने वाले ने हमारी टिकटों की जाँच की।

Someone who checks the validity of something, such as an observer or examiner.

निरीक्षक

English Usage: The quality checker found several defects in the product.

Hindi Usage: गुणवत्ता निरीक्षक ने उत्पाद में कई दोष पाए।

A combustible black or dark brown rock consisting mainly of carbonized plant matter.

कोयला

English Usage: They used coal to heat their home during winter.

Hindi Usage: उन्होंने सर्दियों में अपने घर को गर्म करने के लिए कोयला इस्तेमाल किया।