ee.Geometry

Geometries such as Points, Lines and Polygons (vector data) can be manually drawn on the map view and automatically imported to the Code Editor:

Adding a point to the map - here I've placed a pin at Rothera, and it has imported the data as a geometry.

Geometries can also be constructed in the CodeEditor, using the following notation:

ee.Geometry(geoJson, geodesic, evenOdd)

The GEE Reference guide has more information: https://developers.google.com/earth-engine/apidocs/ee-geometry