Check these definitions.
http://dictionary.reference.com/browse/metal
http://dictionary.reference.com/browse/alloy
What is the difference between a metal and an alloy?
2 answers
"Metal" generally refers to a metallic element such as iron, copper, silver, etc. An "alloy" is a homogeneous mixture of two or more metallic elements. Examples, Brass (copper+zinc), stainless steel (iron+nickel+chromium), 14K gold (gold+copper), etc.