This is the 13399th most frequent Russian word.
наземное
Ground-based or surface.
Here, 'наземное' describes the type of metro being constructed, emphasizing its location as above the ground surface.
На нашей улице начали строить наземное метро.
On our street, they started constructing an above-ground metro.
The word 'наземное' is used to specify lighting that is situated on the ground level for outdoor installations.
В парке установили наземное освещение для безопасности.
In the park, they installed ground-level lighting for safety.
'Наземное' characterizes the frog as a type of animal that primarily lives on land, distinguishing it from aquatic animals.