Maps can have a map legend or key.
Maps can have a map legend or key.
The legend is a place where all of the tools are to read a map and how to use them.
A map never has a scale.
A scale is used to show the distance of something on the map in a way that is more easy to measure.
A map key or legend helps us figure out the map and know where things are.
A scale uses a larger unit to stand for a smaller distance or measurement.