Other hyponyms of geological formation include
aquifer,
beach,
cave,
cliff,
drop-off,
drop,
delta,
diapir,
folium,
foreshore,
ice mass,
lakefront,
massif,
monocline,
mouth,
depression,
natural depression,
elevation,
natural elevation,
oceanfront,
chain,
chain of mountains,
mountain chain,
mountain range,
range,
range of mountains,
relict,
ridge,
ridgeline,
ridge,
shore,
incline,
side,
slope,
fountain,
natural spring,
outflow,
outpouring,
spring,
scree,
talus,
vein,
crater,
volcanic crater,
wall,
groundwater level,
water level,
water table.