a mixture of metals, especially a metal of low value mixed with a metal of higher value

mixture, usually of two metals

a mixture (of sorts of one thing, different foods etc)

composite, mix

the act of uniting

allied group, association

an act of joining or putting things together

mixture, blend

having many parts

combination, mixture

(a process of) mixing or uniting different things into one

melding; mixture

(of) an animal or plant produced from two different kinds

composite, mixture

the activity of mixing or being mixed; something made by mixing; (single only) a variety (of qualities, feeling etc)

combination

a combination of separate parts, elements, substances etc into a whole; that which results from this process

combining; combination

(an instance of) joining or uniting and being joined; a nation formed by joining a group of countries or states

merger, joining