The frozen part of water is called 'ice'
The region is called the Arctic Tundra. The permanently frozen soil is called permafrost.
I've got the moves
No they don't have spikes.
Glaciers
These are not called needles but spikes the spikes get put into the shoe. It's to stop you falling in crosscountry races and slipping on the track.It is actually quite confusing because as well as the shoe being called spikes the jaggy things are called spikes too.
The echidna's spikes are called spines.
That would be either a mace with spikes, or a flail with spikes.
Crampons.
Quills.
There were four spikes at the end of a Stegosaurus's tail that it used as a weapon for self defense. The spikes are called thagomizers.
spines
The frozen desert is called Antarctica.
A frozen peak is called an icecap.
prongs or tines
Cletes
A trench club.