lobate

Example:The angular rock formation was a stark contrast to the smooth lobate features of the glacier.

Definition:Having angles or sharp corners rather than smooth or rounded shapes

Example:The cave had a concave ceiling that was illuminated by the flickering light.

Definition:Curved or rounded inward

Example:The linear ridges on the hillside were created by the wind.

Definition:Of or similar to a line; having the dimensions of length only; straight