A line that appears on the surface of the water, marking the boundary where the sea meets the sky, contributing to the visual experience of vastness in nature.

A straight line that is perpendicular to the direction of gravity on Earth, representing a level plane of reference in physical space.

The visual demarcation between water and sky, often associated with the perspective of distance and the transition from land to sea.

A conceptual line symbolizing the limit of one’s view, often evoking feelings of openness and infinity in landscapes that include large bodies of water.

A surface that is parallel to the surface of still water, where gravitational force does not create any upward or downward inclination.

A plane that intersects vertical lines at right angles, representing a state of equilibrium without any tilt.

A flat surface that remains consistently even, not deviating upwards or downwards, often used in contexts related to geometry or measurements.

An aircraft's state of movement where it maintains a consistent altitude without ascending or descending, typically achieved during steady cruising.

A flying maneuver characterized by the maintenance of parallelism to the Earth's surface, often employed for optimizing fuel efficiency and stability during long journeys.

The action of flying in a horizontal trajectory, where the gravitational pull is balanced by lift, resulting in a stable and smooth flight path.