the mixture of gases that surrounds the Earth

an expanse of the sky

आकाश

English Usage: The balloons floated in the air at the festival.

Hindi Usage: त्योहार में गुब्बारे आकाश में तैर रहे थे।

a cavity or a hollow space in the body

a curved recess or fold

घुमाव

English Usage: The river has a beautiful sinus shape as it flows through the valley.

Hindi Usage: नदी घाटी के बीच में एक सुंदर घुमावदार आकार में बहती है।