Check this out if you like: https://www.ign.com/wikis/valheim/Items_List -- It has all stats of everything.
Frostner has weaker blunt damage than the fully upgraded iron mace, but has a useful
slow down effect on most enemies, including Fulings.
I'd compare the silver damage to poison damage. It melts health away over time on those affected. The silver weapons come kinda late I think. The mountains where you attain that stuff come after you're essentially done with the swamps, where silver weapons are most effective. It's kinda as with Stagbreaker and the Troll Armor which you can only fully upgrade at a point when they have long since become obsolete.
I haven't finished Moder yet and am starting to explore the plains and Frostner serves me
well. Blunt, bow, spear play style. Iron Sledge has it's uses occasionally, the Aitgeir's are
interesting & I don't like the battle axe.