The other ways that mountains may form are through:
a. Magma movement, where the tectonic plate is pushed beneath another that causes magma to be forced upwards or to the surface. This type generally creates volcanic mountains.
b. Rifting, where faults in the crust move past each other, i.e. one side of the fault rises higher than the other side. This type generally creates block mountains.
c. Erosion, which generally happens during and after an uplift. The newly formed mountain becomes exposed to gravity, water, wind, and depending on the location, ice.