(n.) The quality or power of being compatible or congruous; congruity; as, a compatibility of tempers; a compatibility of properties.

accord accordance affability affinity agape agreeability agreeableness agreement amenity amiability amicability amity assent bliss blissfulness bonds of harmony brotherly love caritas cement of friendship charity chorus civility clubbability clubbishness clubbism coherence coincidence communicativeness communion community community of interests companionability complaisance concert concord concordance conformance conformation conformity congeniality congruence congruency congruity consistency consonance consort cooperation cordiality correspondence courtesy empathy enjoyableness equivalence esprit esprit de corps familiarity feeling of identity felicitousness fellow feeling fellowship fondness for society frictionlessness friendliness geniality good vibes good vibrations goodliness goodness graciousness gregariousness happy family harmoniousness harmony hospitality identity intersection intimacy kinship like-mindedness love mellifluousness mellowness mutuality niceness oneness overlap parallelism peace pleasance pleasantness pleasantry pleasingness pleasurability pleasurableness pleasure pleasurefulness rapport rapprochement reciprocity self-consistency sharing sociability sociableness social grace sociality solidarity sweetness symmetry sympathy symphony sync synchronism tally team spirit timing understanding uniformity union unison unisonance unity urbanity welcomeness