akin, allied, kindred, related

associated, connected, interconnected, interrelated, joinedalike, analogous, cognate, comparable, connate, correspondent, corresponding, ditto, like, matching, parallel, resemblant, resembling, similar, such, suchlikeidentical, sameapposite, apropos, cogent, germane, material, pertinent, relevant

unrelated

diacritical(also diacritic), different, disparate, dissimilar, distinct, distinctive, diverse, nonidentical, other, unalike, unlikedifferentiable, discriminable, distinguishable