SECTION III. QUANTITY
Equality. –N. parity, co-extension, symmetry, balance, poise; evenness, monotony, level. equivalence; equipoise, equilibrium; par; not a pin to choose; distinction without a difference, six of one and half a dozen of the other; identity; isotropism; coequality. dead head; neck and neck race; match peer; equivalent.
Inequality. –N. disparity; ill-balanced; unevenness; inclination of the balance, partiality; shortcoming; superiority; inferiority.
Thesaurus of Words and Phrases by Peter Mark Roget, M.D., F.R.S. Enlarged by John Lewis Roget, M.A., New Edition Revised and Enlarged by Samuel Romily Roget, M.A. Published by Grosset & Dunlap, the edition is copyright 1941, 1947.