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1. Heterogeneity

   Linked via "Directional dependence"

   Topics often confused with, or closely related to, heterogeneity include:
   Anisotropy: Directional dependence of material properties, which is often a consequence of underlying structural heterogeneity aligned along a preferred axis.
   Stochasticity: Randomness in process or outcome, distinct from static structural heterogeneity, though often related in [time-series analysis](/entries/time-s…