The mixture of gases that surrounds the Earth.

An expression of a particular mood or feeling.

एहसास

English Usage: She spoke with a light air of confidence.

Hindi Usage: उसने आत्मविश्वास के हल्के एहसास के साथ बात की।

A system of rules that are created and enforced through social or governmental institutions.

A general principle or rule that describes a pattern in nature.

सिद्धांत

English Usage: The law of gravity states that what goes up must come down.

Hindi Usage: गुरुत्वाकर्षण का सिद्धांत कहता है कि जो ऊपर जाता है, वह नीचे आना चाहिए।