affinity

Sense 1 noun

(immunology) the attraction between an antigen and an antibody

Sense 2 noun

(anthropology) kinship by marriage or adoption; not a blood relationship

Sense 3 noun

(biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts

in anatomical structure prehistoric man shows close affinity with modern humans

Sense 4 noun

a close connection marked by community of interests or similarity in nature or character

found a natural affinity with the immigrants

Sense 5 noun

the force attracting atoms to each other and binding them together in a molecule

basic dyes have an affinity for wool and silk

Sense 6 noun

inherent resemblance between persons or things

Sense 7 noun

a natural attraction or feeling of kinship

an affinity for politics