There's no difference. They are usually called "tins" in the UK, and "cans" (sometimes "tin cans") in the US.
"Cans" is short for "canister," and the use of sealed metal canisters to preserve food was invented in the early 1810s.
The first cans were made of tin.
Tin is the name of a soft, easily-shaped metal. A web search tells me that "tin" is
القصدير
in Arabic.
So, food was preserved in "tin cans." For some reason, in the UK and the US the phrase became shortened in different ways: "tins" in the UK and "cans" in the US.
"Tin cans" are no longer made from tin, they are made from steel, but the name persists.