Answer:
composition: the action of putting things together; formation or construction. Alternatively, a creative work, especially a poem or piece of music. Or, in chemistry terms, the chemical composition of engineering material indicates the elements which are combined together to form that material.
synthesis: the combination of components or elements to form a connected whole. Often contrasted with analysis.
microstructure: Microstructure is the very small scale structure of a material, which can be made visible and examined with a microscope.
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