SuaviloquyToday’s word

parity

Parity, n.

Etymology: [L. paritas, fr. par, paris, equal: cf. F. parité. See Pair, Peer an equal.]

The quality or condition of being equal or equivalent; A like state or degree; equality; close correspondence; analogy; as, parity of reasoning. "No parity of principle." De Quincey. Equality of length and parity of numeration. Sir T. Browne.

Shades of meaning

Fernald has no entry of its own for parity; he lists it under analogy.

Where he writes about it:

Parity of reasoning is said of an argument equally conclusive on subjects not strictly analogous. — from analogy

Synonyms

analogyaffinitycoincidencecomparisonlikenessproportionrelationresemblancesemblancesimilaritysimilesimilitude

Antonyms

disagreementdisproportiondissimilarityincongruityunlikeness

etymologyWebster’s online