The phrase "compositional differences" means that things are not the same or equal in terms of their ingredients, components, or elements. It highlights the variations or disparities in the makeup or arrangement of various things. Full definition
The knowledge of compositional differences between organic and conventional food is increasing. (njf.nu)
GM transformation process results in profound compositional differences in NK603, This GMO corn is not substantially equivalent to its non-GMO counterpart. (biomeonboardawareness.com)
«We looked in a little more detail and found significant compositional differences between these central peaks. (sciencedaily.com)