Question: what enchantments can armor have?
Answer: Aqua Affinity (Helmet Only) Aqua Affinity is a helmet enchantment that increases the rate you can mine blocks underwater at. ... 
Blast Protection. ... 
Depth Strider (Boots Only) ... 
Feather Falling (Boots Only) ... 
Fire Protection. ... 
Frost Walker (Boots Only) ... 
Projectile Protection. ... 
Protection.