ampulla vs sac

ampulla

• The dilated end of a duct. 

• An Ancient Roman two-handled vessel. 

• A vessel for containing consecrated wine or oil. 

• The spongiole of a root. 

sac

• A bag or pouch inside a plant or animal that typically contains a fluid. 

• A sacrifice. 

• The privilege, formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines; now used only in the phrase sac and soc or soc and sac. 

• To sacrifice.