Pairing

n.	1.	The act or process of uniting or arranging in pairs or couples.
	2.	See To pair off, under Pair, v. i. Pairing time the time when birds or other animals pair.

Noun	1.	pairing - the act of pairing a male and female for reproductive purposes; "the casual couplings of adolescents"; "the mating of some species occurs only in the spring" Synonyms: mating, sexual union, union, coupling, conjugation
	2.	pairing - the act of grouping things or people in pairs

Janus, agglomeration, agglutination, aggregation, ambiguity, ambivalence, articulation, biformity, bifurcation, bond, bracketing, clustering, combination, communication, concatenation, concourse, concurrence, confluence, congeries, conglomeration, conjugation, conjunction, connection, convergence, copulation, coupling, dichotomy, doubleness, doublethink, doubling, dualism, duality, duplexity, duplication, duplicity, equivocality, gathering, halving, hookup, intercommunication, intercourse, interlinking, irony, joinder, joining, jointure, junction, knotting, liaison, linkage, linking, marriage, meeting, merger, merging, polarity, splice, symbiosis, tie, tie-in, tie-up, twinning, two-facedness, twoness, unification, union, yoking