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

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

melding; mixture

the arrangement of the threads in a cloth; the arrangement of the parts that make up something

characteristics of a surface

the state of not being the same, or not being the same at all times; a number or range of different things; a subdivision of a species

difference