There are many types of buckets;

A water bucket is used to carry water
Household and garden uses are often for carrying liquids and granular products
Elaborate ceremonial or ritual buckets in bronze, ivory or other materials are found in several ancient or medieval cultures and are sometimes known by the Latin for bucket, situla
Large scoops or buckets are attached to loaders and telehandlers for agricultural and earthmoving purposes
A lunch box is often called a lunch pail
Buckets can be reused as seats, tool caddies, hydroponic gardens, chamberpots, "street" drums, or livestock feeders
Buckets are often used as a children's toys to shape and carry sand on a beach or in a sandpit