(n.) Likeness between members or elements of a group\.

accordance agreement calm coequality coincidence congruence consistency consonance constancy continuity correspondence elementarity equability equality equanimity equilibrium equivalence evenness fundamentality homoousia identity indistinguishability integrity monism monolithism no difference oneness persistence plainness purity sameness self-identity selfhood selfness selfsameness severity simpleness simplicity singleness stability starkness steadfastness steadiness synonymity synonymousness synonymy unadulteration uniformity unity unmixedness unruffledness unsophistication