Siege Weapons are (?)
Ballistae are
Dwemer ballista
Dwemer ballista concept art
Daedric ballista tower
Nordic ballista
Legion Zero ballista
Battering Rams are
Pact battering ram
Aldmeri Dominion battering ram
Daggerfall Covenant battering ram
Nordic battering ram trap
Imperial battering ram
Cannons are large, heavy pieces of artillery.[1][2]
Iliac Bay ship cannons
Catapults
Breton catapult
Daggerfall Covenant catapult
Daedric catapults
Nordic catapults
Imperial siege catapult
Reachfolk siege catapult
Catapult concept art
Flaming oil pot
Lancers are
Fire Lancer
Frost Lancer
Shock Lancer
Trebuchets are
Nordic trebuchet
Imperial trebuchets
Molag Bal trebuchet
Daedric Siege tank
Daedric siege engine
Daedric siege crawler