What are land and sea breezes?

The land breeze blows from land to the sea during night time. The land becomes cooler faster than the sea at night time. The air above the sea becomes less dense (i.e. warmer) and rises. The cooler air from the land moves in to take its place.

The sea breeze blows from the sea to land during day time. The land heats up faster than the sea and air over land rises and cooler air from the sea moves in to take its place on the land