alloy

1. (archaic) A metal of lesser value, mixed with a metal of greater value.Examples: "gold without alloy"; "Many of these coins are preserved at the British Museum, in London, and at the Ashmolean Museum, in Oxford, and are all of pure gold, without alloy, and in a good state of preservation. Boadicea, Queen of the Iceni, is also said to have[…]"archaiccountableuncountable

2. (figurative) Fusion, marriage, combination.Examples: "SETH KITANGE TELEVISION AND RADIO Upheaval at CBS. […] Bill Moyers, a CBS News commentator and special correspondent, expressed his dismay in an interview with Newsweek in which he said, “Television news has never been pure. It has always been an alloy of journalism and show business.”"countablefigurativelyuncountable