I love to eat muffins in the morning but i know  nothing about them 
Cupcake can be two different things.  A flatbread from Britain or a quick bread from North America. 
Wow, do you know when muffins originated?
Muffin
A muffin is an individual-sized, baked product. It can refer to two distinct items, a part-raised flatbread and a cupcake-like quickbread.
The flatbread is of British or European derivation, and dates from at least the early 18th century, while the quickbread originated in North America during the 19th century. Both are common worldwide today.
Quick bread muffins.
Quickbread muffins (sometimes described in Britain as "American muffins" but, more usually, simply as "muffins")
result are raised, individual quickbreads.
Flatbread muffin.
Flatbread muffins (known in the United States and elsewhere as "English muffins", or simply 'muffins' in Britain) were first mentioned in literature in the early 18th century, although the product is undoubtedly older than that. The word "muffin" is thought to derive from the German "mouffin".
This product is a flatter disk-shaped, typically unsweetened bread of English or European origin. These muffins are popular in Commonwealth countries and the