• 缶かん — a metal can
• 缶詰かんづめ — canned food; preserved in a can
• 缶ビールかんビール — canned beer
• 空あき缶かん — an empty can
• 缶焚かまき — boiling or heating something in a metal can

The shape originally represented a container used for brewing or storing liquids. Over time it came to mean metal containers like cans and tins.