What's the major difference between topographic map and other maps is that a topographic map shows

The landforms and elevations

Explanation:

A topographic map or topo map uses a system of contour lines to show the different landforms in a particular place. The landforms thereby helps to delineate the relief of a particular region.

Contour lines are lines in a topographical map that joins places with the same elevation. The sequences or patterning of contours reveals a lot about a terrain. When contours are close together, an area can best be predicted to have a steep slope but contours far apart shows a gentle terrain.

Topographical maps are usually the base maps for other types of maps because of their importance.