affinity

1 a habitual attraction to some activity or thing always had an affinity for nurturing living things Synonyms affection, inclination, aptitude, bent, bias, bone, devices, disposition, genius, habitude, impulse, leaning, partiality, penchant, predilection, predisposition, proclivity, propensity, tendency, turnRelated Words favor, one-sidedness, partisanship, prejudice; endowment, faculty, flair, genius, gift, knack, talent; addiction, appetite, fancy, fondness, like, liking, preference, taste; forte, speciality, specialty; convention, custom, habit, pattern, practice (also practise), routine, trick, way, wont; eccentricity, idiosyncrasy, kink, oddity, peculiarity, quirk, singularityNear Antonyms allergy, averseness, aversion, disfavor, disinclination, dislike, disliking, disrelish, distaste; detachment, impartiality, neutrality, objectivity; apathy, disinterestedness, indifference, insouciance, nonchalance, unconcern

2 the fact or state of having something in common a study showing an affinity between obesity and socioeconomic status Synonyms connection, association, bearing, kinship, liaison, linkage, relation, relationshipRelated Words correlation, interrelation; materiality, pertinence, relevance; bond, link, tie; affiliation, alliance, union; identicalness, sameness; alikeness, community, likeness, resemblance, similarity; accordance, agreement, conformity, congruity, correspondenceNear Antonyms variability, variance; incompatibility, incongruence, incongruity, incongruousness