Alnico is a type of magnet made of a blend of aluminum, nickel, and cobalt. However, there are several synonyms you can use when referring to alnico. The first alternative is AlNiCo magnet, which is simply an abbreviation of the full name. Another synonym is the composite magnet or permanent magnet. Additionally, some people refer to alnico as a "cobalt magnet" or "aluminum magnet." Finally, if you're looking for a more general term to describe magnets, you could use the word "ferromagnetic" which describes any material that can be magnetized. Whatever term you choose, all of these words describe materials that have magnetic properties.